{"id":49644,"date":"2023-07-22T20:08:35","date_gmt":"2023-07-22T14:38:35","guid":{"rendered":"https:\/\/apboardsolutions.com\/?p=49644"},"modified":"2023-07-24T19:11:57","modified_gmt":"2023-07-24T13:41:57","slug":"ap-inter-1st-year-botany-important-questions-chapter-12","status":"publish","type":"post","link":"https:\/\/apboardsolutions.com\/ap-inter-1st-year-botany-important-questions-chapter-12\/","title":{"rendered":"AP Inter 1st Year Botany Important Questions Chapter 12 Histology and Anatomy of Flowering Plants"},"content":{"rendered":"
Students get through AP Inter 1st Year Botany Important Questions<\/a> 12th Lesson Histology and Anatomy of Flowering Plants which are most likely to be asked in the exam.<\/p>\n Very Short Answer Questions<\/span><\/p>\n Question 1. Question 2. <\/p>\n Question 3. Question 4. Question 5. Question 6. Question 7. Question 8. Question 9. Question 10. Question 11. Short Answer Questions<\/span><\/p>\n Question 1. 1) Apical meristems: These are present at the growing tips of roots, stems, branches etc. They help in linear growth of the plant body. They appear early in the life of a plant and contribute to the formation of the primary plant body. So they are called primary meristems. 2) Intercalary meristems: These are found in between the permanent tissues. They are seen at the base of intemodes and leaf bases of monocotyledons, particularly grasses. They are active for a short period and gradually change into permanent tissues. These are also primary meristems.<\/p>\n 3) Lateral meristems: They are present at the lateral sides of the plant body. The cells help to increase the thickness of the organs like stem and root. It helps in the secondary growth. Ex: Vascular cambium<\/p>\n <\/p>\n Question 2. Dicot stem<\/p>\n Question 3. Periderm formation:<\/p>\n Question 4. Question 5. Question 6. b) I nterfasicular cambium: It helps in formation of complete ring of vascular cambium along with intrafasicular cambial strips. The vascular cambium thus formed helps in intrastelar secondary growth.<\/p>\n c) Collenchyma: It provides flexibility and tensile strength with mechanical strength in young aerial plant parts like young stem and petiole of leaf.<\/p>\n d) Sclerenchyma: It is a dead mechanical tissue. It gives tensile strength to the stem which is purely mechanical in function.<\/p>\n <\/p>\n Question 7. Question 8. Monocot leaf<\/p>\n Question 9. <\/p>\n Question 10. Epidermal tissue system consists of parenchymatous tissue. They are epidermis, stomata and the epidermal out growths like trichomes and hairs.<\/p>\n Ground tissue system consists of simple tissues like parenchyma, collenchyma and sclerenchyma. Long Answer Questions<\/span><\/p>\n Question 1. I) Intra stelar secondary growth: These are the changes that occur inside the stelar region. They occur in two stages. b) Activity of the vascular cambial ring:<\/p>\n II) Extra stelar secondary growth: These are the changes that occur outside the stelar region.<\/p>\n Question 2. Dicot root<\/p>\n <\/p>\n b. Differences between Monocot stem and Dicot stema.<\/p>\n Monocot stem<\/p>\n Dicot stem<\/p>\n Question 3. b) Collenchyma:<\/p>\n c) Sclerenchyma:<\/p>\n Question 4. I) Xylem: Xylem is the conducting tissue for water and minerals from roots to the stem and leaves. It also provides mechanical strength to the plant parts. It is composed of four different kinds of elements. They are (a) tracheids (b) vessels (c) xylem fibres (d) xylem parenchyma.<\/p>\n a) Tracheids: These are elongated tube like cells with thick and lignified walls and tapering ends. These are dead elements. The inner layers of cell walls have thickenings which vary in form. In flowering plants, tracheids and vessels are the main transporting elements. b) Vessels: Vessel is a long cylindrical tube like structure made up of many cells called vessel members. Vessels are inter connected through perforations in their common walls. The presence of vessels is a characteristic feature of angiosperms.<\/p>\n c) Xylem fibres: They have highly thickened walls and obliterated central lumens. These may either be septate or aseptate.<\/p>\n d) Xylem parenchyma: The xylem parenchyma cells are living and thin walled. Their cell walls are made up of cellulose. They store food in the form of starch and fat. The radial conduction of water takes place by the ray -parenchymatous cells.<\/p>\n In stems, the protoxylem lies towards the centre and metaxylem lies towards the periphery of the organ. This type of xylem is called ‘endarch’.<\/p>\n In roots, the protoxylem lies towards periphery and metaxylem lies towards the centre. This type of arrangement of primary xylem is called ‘exarch’.<\/p>\n II) Phloem: Phloem transports food materials from the leaves to other parts of the plant. Phloem in angiosperms is composed of sieve tube elements, companion cells, phloem parenchyma and phloem fibres. (b) Companion cells: The companion cells are closely associated with sieve tube element. The sieve tube elements and companion cells are connected by pit fields present between their common longitudinal walls.<\/p>\n (c) Phloem parenchyma: It is made up of elongated, tapering cylindrical cells with dense cycloplasm and nucleus. They store food material, resin and letex.<\/p>\n (d) Phloem fibres (bast fibres): They are made up of sclerenchymatous cells. They are elongated, pointed and needle like. At maturity, these fibres lose their protoplasm and become dead.<\/p>\n <\/p>\n Question 5. I) Epidermis:<\/p>\n II) Mesophyll:<\/p>\n III. Vascular Bundles:<\/p>\n Question 6. 1) Epidermis:<\/p>\n II) Mesophyll:<\/p>\n III) Vascular Bundles:<\/p>\n Question 7. <\/p>\n Question 8. Question 9. II) Cortex: The part between epidermis and stele is called cortex. It has three subzones b) Parenchyma) General Cortex):<\/p>\n c) Endodermis:<\/p>\n III) Stele: Stele is the central conducting cylinder b) Vascular bundles:<\/p>\n c) Medulla(pith):<\/p>\n d) Medullary rays:<\/p>\n Question 10. I) Epidermis:<\/p>\n II) Hypodermis:<\/p>\n III) Ground tissue:<\/p>\n IV) Vascular bundles:<\/p>\n Question 11. II) Cortex: b) Parenchymal Genera! Cortex):<\/p>\n c) Endodermis:<\/p>\n <\/p>\n III) Stele:<\/p>\n a) Pericycle:<\/p>\n b) Vascular bundles:<\/p>\n c) Medulla (or) Pith :<\/p>\n Question 12. II) Cortex: b) Parenchymal General Cortex):<\/p>\n c) Endodermis:<\/p>\n III) Stele:<\/p>\n a) Pericycle:<\/p>\n b) Vascular bundles:<\/p>\n c) Medulla (or) Pith:<\/p>\n Exercise<\/span><\/p>\n Question 1. Question 2. <\/p>\n Question 3. Multiple Choice Questions<\/span><\/p>\n Question 1. Question 2. Question 3. Question 4. Question 5. Question 6. <\/p>\n Question 7. Question 8. Question 9. Question 10. Question 11. Question 12. Question 13. Question 14. Question 15. Question 16. <\/p>\n Question 17. Question 18. Question 19. Question 20. Question 21. Question 22. Question 23. Question 24. Question 25. Question 26. <\/p>\n Question 27. Question 28. Question 29. Question 30. Question 31. Question 32. Question 33. Question 34. Question 35. Question 36. Question 37. Question 38. Question 39. <\/p>\n Question 40. Question 41. Question 42. Question 43. Question 44. Question 45. Question 46. Question 47. Question 48. Question 49. <\/p>\n Question 50. Question 51. Question 52. Question 53. Question 54. Question 55. Question 56. Question 57. Question 58. Question 59. Question 60. Question 61. Question 62. Question 63. Question 64. Question 65. <\/p>\n Question 66. Question 67. Question 68. Question 69. Question 70. Question 71. <\/p>\n Question 72. Question 73. Question 74. Question 75. Question 76. Question 77. <\/p>\n Question 78. Question 79. Question 80. Question 81. Question 82. Question 83. Question 84. Question 85. Question 86. Question 87. <\/p>\n Question 88. Question 89. Question 90. Question 91. Question 92. <\/p>\n Question 93. Students get through AP Inter 1st Year Botany Important Questions 12th Lesson Histology and Anatomy of Flowering Plants which are most likely to be asked in the exam. AP Inter 1st Year Botany Important Questions 12th Lesson Histology and Anatomy of Flowering Plants Very Short Answer Questions Question 1. The transverse section ofa plant material … Read more<\/a><\/p>\n","protected":false},"author":4,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"spay_email":""},"categories":[13],"tags":[],"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/apboardsolutions.com\/wp-json\/wp\/v2\/posts\/49644"}],"collection":[{"href":"https:\/\/apboardsolutions.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/apboardsolutions.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/apboardsolutions.com\/wp-json\/wp\/v2\/users\/4"}],"replies":[{"embeddable":true,"href":"https:\/\/apboardsolutions.com\/wp-json\/wp\/v2\/comments?post=49644"}],"version-history":[{"count":4,"href":"https:\/\/apboardsolutions.com\/wp-json\/wp\/v2\/posts\/49644\/revisions"}],"predecessor-version":[{"id":49698,"href":"https:\/\/apboardsolutions.com\/wp-json\/wp\/v2\/posts\/49644\/revisions\/49698"}],"wp:attachment":[{"href":"https:\/\/apboardsolutions.com\/wp-json\/wp\/v2\/media?parent=49644"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/apboardsolutions.com\/wp-json\/wp\/v2\/categories?post=49644"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/apboardsolutions.com\/wp-json\/wp\/v2\/tags?post=49644"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}AP Inter 1st Year Botany Important Questions 12th Lesson Histology and Anatomy of Flowering Plants<\/h2>\n
\nThe transverse section ofa plant material shows the following anatomical features- a. the vascular bundles are conjoint, scattered and surrounded by a sclerenchymatous bundle sheaths, b. Phloem parenchyma is absent. What will you identify it as?
\nAnswer:
\nMonocot stem<\/p>\n
\nWhy are xyleni and phloem called complex tissues?
\nAnswer:
\nXylem and phloem are permanent tissues having more than one type of cells and work together as a unit. So they are called complex tissues.<\/p>\n
\nHow is the study of plant anatomy useful to us?
\nAnswer:<\/p>\n\n
\nProtoxylem is the first formed xylem. If the protoxylem lies radially next to phloem. What kind of arrangement of xylem would you call it? Where do you find it\/
\nAnswer:
\na) Radial vascular bundle b) They are found in roots.<\/p>\n
\nWhat is the function of phloem parenchyma?
\nAnswer:
\nPhloem parenchyma stores food materials and other excretory substances like gums, resins, latex and mucilage.<\/p>\n
\na) What is present on the surface of the leaves which helps the plant to prevent loss of water but is absent in roots?
\nb) What is the epidermal cell modification in plants which prevents water loss?
\nAnswer:
\na) Cuticle b) Trichomes<\/p>\n
\nWhich part of the plant would show the following?
\na) Radial vascular bundle
\nb) Polyarch xylem
\nc) Well developed pith
\nd)Exarch xylem
\nAnswer:
\na) Root
\nb) Monocot root
\nc) Monocot root
\nd) Root<\/p>\n
\nWhat are the cells that make the leaves curl in plants during water stress? Give an example.
\nAnswer:
\nBulli form cells. Ex: Monocot leaves (Grass)<\/p>\n
\nWhat constitutes the vascular cambial ring?
\nAnswer:
\nIntrafascicular cambium and Interfascicular cambium constitutes cambial ring.<\/p>\n
\nGive one basic functional difference between phellogen and phelloderm.
\nAnswer:<\/p>\n\n
\nIf one debarks a tree, what parts of the plant are removed?
\nAnswer:
\nAll the tissues outside the vascular cambium are removed i.e., periderm and secondary phloem are removed.<\/p>\n
\nState the location and function of different types of meristems. [TS M-15, 16, 17, 19] [AP M-20]
\nAnswer:
\nBased on the location, Meristems are three types.
\nThey are<\/p>\n\n
\n<\/p>\n
\nCut a transverse section of young stem of a plant from your garden and observe it under the microscope. How would you ascertain whether it is a monocot stem or a dicot stem? Give reason.
\nAnswer:
\nBased on the following differences we can ascertain whether the given stem is monocot or dicot.
\nMonocot stem<\/p>\n\n
\n
\nWhat is periderm? How does periderm formation take place in the dieot stems? [AP, TS M-18]
\nAnswer:
\nPeriderm: The corkey outer layer of a plant system formed as a secondary covering in response to injury or infection is called Periderm.<\/p>\n\n
\nA transverse section of the trunk of a tree shows concentric rings which are known as annual rings. How are these rings formed? What is the significance of these rings?
\nAnswer:<\/p>\n\n
\n<\/li>\n
\nWhat is the difference between lenticels and stomata? [AP M-19] [AP, TS Mar, May-17]
\nAnswer:<\/p>\n
\nWrite the precise function of
\na) Sieve tube b) interfasicular cambium c) Collenchyma d) Sclerenchyma
\nAnswer:
\na) Sieve tube: The precise function of sieve tube is to transport organic food materials from leaves to other parts of plant body.<\/p>\n
\nThe stomatal pore is guarded by two kidney shaped guard ceils. Name the epidermal cells surrounding the guard cells. How does a guard cell differ from an epidermal cell? Use a diagram to illustrate your answer.
\nAnswer:<\/p>\n\n
\n<\/li>\n
\nPoint out the differences in the anatomy of leaf of peepal (Ficus religiosa) and maize (zea mays). Draw the diagrams and label the differences.
\nAnswer:
\nDicot leaf<\/p>\n\n
\n<\/li>\n<\/ol>\n\n
\n<\/li>\n<\/ol>\n
\nCork cambium forms tissues that form the cork. Do you agree with this statement? Explain.
\nAnswer:
\nYes. Cork cambium is a secondary meristematic tissue. It is of two layered thickness. It has the capacity to divide. It cuts off cells on both the sides. The outer cells differentiate into cork or phellem. The inner cells differentiate into secondary cortex or phelloderm.<\/p>\n
\nName the three basic tissue systems in the flowering plants. Give the tissue names under each system.
\nAnswer:
\nOn the basis of structure and location, there are three types of tissue systems.
\nThey are<\/p>\n\n
\nVascular tissue system consists of complex tissues, the phloem and xyiem.<\/p>\n
\nExplain the process of secondary growth in the stems of woody angiosperms with the help of schematic diagrams. What is its significance?
\nAnswer:
\nThe process of secondary growth occur in two steps:
\nI) Intra stelar secondary growth. II) Extra stelar secondary growth<\/p>\n
\na) Formation of vascular cambium ring:<\/p>\n\n
\n
\nThey are (a) Fusi form initials (b) Ray initial.<\/li>\n\n
\n<\/li>\n<\/ol>\n
\nDraw illustrations to bring out the anatomical differences between a. Monocot root and Dicot root
\nb. Monocot stem and Dicot stema.
\nAnswer:
\nMonocot root<\/p>\n\n
\n<\/li>\n<\/ol>\n\n
\n<\/li>\n<\/ol>\n\n
\n<\/li>\n<\/ol>\n\n
\n<\/li>\n<\/ol>\n
\nWhat are simple tissues? Describe various types of simple tissues.
\nAnswer:
\nSimple Tissues: Tissues which are made up of only one type of cells are called simple tissues.
\nThe various simple tissues in plants are parenchyma, collenchyma and sclerenchyma.
\na) Parenchyma:<\/p>\n\n
\n<\/li>\n<\/ol>\n\n
\n<\/li>\n<\/ol>\n\n
\n<\/li>\n<\/ol>\n
\nWhat are complex tissues? Describe various types of complex tissues. [TS M -19]
\nAnswer:
\nComplex tissues: Tissues which are made up of more than one type of cells and work together as a unit are called complex tissues. They are of two types Xylem and Phloem.<\/p>\n
\n<\/p>\n
\n(a) Sieve Tube elements: These are long tube like structures, arranged longitudinally and are associated with companion cells. Their end walls are perforated in a sieve like manner to form sieve plates.
\n<\/p>\n
\nDescribe the internal structure of dorsiventral leaf with the help of labelled diagram.
\nAnswer:
\nT.S (Transverse Section) of dorsiventral leaf (dicot leaf) shows three main parts.
\nThey are I) Epidermis II) Mesophyll III) Vascular bundles. [TS Mar-17, 20] [AP Mar-19]<\/p>\n\n
\n
\n
\n<\/li>\n<\/ol>\n
\nDescribe the internal structure of an isobilateral leaf with the help of labelled diagram.
\nAnswer:
\nT.S (Transverse Section) of isobilateral leaf shows three main parts.
\nThey are I) Epidermis II) Mesophyll III) Vascular bundles.<\/p>\n\n
\n
\n
\n<\/li>\n<\/ol>\n
\nDistinguish between the following:
\na) Exarch and endarch condition of protoxylem
\nb) Steie and vascular bundle,
\nc) Protoxylem and metaxylem
\nd) Interfasicuiar cambium and intrafasicular cambium
\ne) Open and closed vascular bundles,
\nf) Stem hair and root hair
\ng) Heart wood and sap wood
\nh) Spring wood and Autumn wood.
\nAnswer:<\/p>\n\n\n
\n a)\u00a0Exarch<\/td>\n Endarch<\/td>\n<\/tr>\n \n The protoxylem lies towards the periphery and mataxylem lies towards the centre. Ex: Root<\/td>\n The protoxylem lies towards the center (pith) and the metaxylem lies towards the periphery (pericycle).Ex: Stem<\/td>\n<\/tr>\n \n b) Stele<\/td>\n Vascular bundle<\/td>\n<\/tr>\n \n It is the central conduction cylinder consisting pericycle, vascular bundles, pith or medulla and medullary rays.<\/td>\n It is a strand of central conduction cylinder or stele consisting xylem bundles and phloem bundles.<\/td>\n<\/tr>\n \n c) Protoxylem<\/td>\n Metaxylem<\/td>\n<\/tr>\n \n 1)\u00a0The first formed primary xylem elements are called protoxylem
\n2)>They have narrow lumen<\/td>\n1)\u00a0Later formed primary xylem elements are called metaxylem.
\n2)\u00a0They have wider lumen.<\/td>\n<\/tr>\n\n d) Interfasicuiar Cambium<\/td>\n Intrafasicular cambium<\/td>\n<\/tr>\n \n 1) A few cells of the medullary rays, present opposite to the intra fasicular cambium become meristematic and is known as interfasicuiar cambium.
\n2)\u00a0It is the tissue present in between the vascular bundles.<\/td>\n1)\u00a0The cambium present in between the primary xylem and primary phloem of a vascular bundle is called intra fasicular cambium.
\n2)\u00a0It is present with in a vascular bundle.<\/td>\n<\/tr>\n\n e) Open vascular bundle<\/td>\n Closed vascular bundle<\/td>\n<\/tr>\n \n 1) If there is a cambium between xylem and phloem of a vascular bundle.
\n2)\u00a0It is said to be open vascular bundle<\/td>\n1)\u00a0If the cambium is not present between xylem and phloem of a vascular bundle,
\n2)\u00a0It is said to be a closed vascular bundle.<\/td>\n<\/tr>\n\n f) Stem hair<\/td>\n Root hair<\/td>\n<\/tr>\n \n 1) They are multicellular
\n2) The epidermal surface is covered by cuticle.
\n3) They check the rate of transpiration.<\/td>\n1)\u00a0These are unicellular.
\n2) The epidermal surface is not covered by cuticle.
\n3) They help in absorption of water from the soil.<\/td>\n<\/tr>\n\n g)\u00a0Heart wood<\/td>\n Sap wood<\/td>\n<\/tr>\n \n 1)\u00a0Constitutes greater part of secondary xylem.
\n2)\u00a0It does not conduct water.
\n3)\u00a0It is highly durable.
\n4)\u00a0It is older and harder part.<\/td>\n1)\u00a0Constitutes relatively lesser part of secondary xylem.
\n2)\u00a0It is active in conduction water.
\n3)\u00a0It is less Durable and more permeable.
\n4) It is younger and softer part.<\/td>\n<\/tr>\n\n h)\u00a0Spring wood<\/td>\n Autumn wood<\/td>\n<\/tr>\n \n 1)\u00a0 Xylem formed in springs season and have wider lumes is called spring wood.
\n2)\u00a0\u00a0 It is light in colour.
\n3)\u00a0\u00a0 It is formed early in a year.
\n4)\u00a0\u00a0 Produced more in amount.
\n5)\u00a0\u00a0 Xylem vessels have wide lumens.<\/td>\n1)\u00a0Xylem formed in autumns season with narrow lumen is called Autumn wood.
\n2) It is dark in colour.
\n3) It is formed after the early wood.
\n4)\u00a0Produced less in amount.
\n5) Xylem vessels have narrow lumens.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
\nWhat is stomatal apparatus? Describe the structure of stomata with a labeled diagram.
\nAnswer:
\nStomatal apparatus: The stomatal opening, guard cells and the surrounding subsidiary cells are together called stomatal apparatus.
\nStructure of stomata:<\/p>\n\n
\n<\/li>\n<\/ul>\n
\nDescribe the T.S of a Dicot Stem.
\nAnswer:
\nT.S of young dicot stem shows three main parts. They are I) Epidermis II) Cortex III) Stele
\nI) Epidermis:<\/p>\n\n
\n<\/li>\n
\na) Hypodermis:<\/p>\n\n
\n<\/li>\n<\/ol>\n\n
\n
\nIt has four parts (a) pericycle (b) vascular bundles (c) medulla (d) Medullary rays.
\na) Pericycle: Pericycle is with single layer of cells surrounding the stele.<\/p>\n\n
\n
\n
\nDescribe the T.S of Monocot Stem.
\nAnswer:
\nT.S of Monocot Stem shows Four main parts. They are
\nI) Epidennis II) Hypodermis III) Ground tissues IV) Vascular bundles.<\/p>\n\n
\n
\n
\n
\n<\/li>\n<\/ol>\n
\nDescribe the internal structure of a Dicot Root.
\nAnswer:
\nT.S of Dicot Root shows three main parts. They are I. Epidermis II. Cortex III. Stele
\nI) Epidermis:<\/p>\n\n
\nThe Region between epidermis and stele is called cortex. It has three subparts.
\na) Exodermis:<\/p>\n\n
\n<\/li>\n<\/ol>\n\n
\n
\n
\n
\n
\n
\nDescribe the internal structure of a Monocot Root. [AP M-20] [AP, TS May-17|
\nAnswer:
\nT.S of Monocot Root shows three main parts.
\n
\nThey are I) Epidermis II) Cortex III) Stele.
\n1) Epidermis:<\/p>\n\n
\nThe Region between epidermis and stele is called cortex. It has three subparts.
\na) Exodermis:<\/p>\n\n
\n
\n
\n
\n
\n
\n
\nName the various kinds of cell layers which constitute the bark.
\nAnswer:
\nPeriderm and Secondary Phloem<\/p>\n
\nA student estimated the age of a tree to be about 300 years. How did he anatomically estimate the age of this tree?
\nAnswer:
\nBy counting the number of annual rings, the age of the tree can be estimated.
\nThis subject is called ‘Dendrochronology’.<\/p>\n
\nAssume that you have removed the duramen part of a tree. Will the tree survive or die?
\nAnswer:<\/p>\n\n
\nA trichome is ………..
\n1. unicellular hair of stem
\n2. multicellular hair of stem
\n3. absorptive in function
\n4. non cuticularised
\nAnswer:
\n3. absorptive in function<\/p>\n
\nBundle sheath as not found around the vascular bundles of
\n1. Monocot stem
\n2. Monocot root
\n3. Dicot leaf
\n4. Monocot leaf
\nAnswer:
\n2. Monocot root<\/p>\n
\nConjunctive tissue helps in
\n1. Storage of food
\n2. Synthesis of carbohydrates
\n3. Conduction of mineral salts
\n4. Giving mechanical strength
\nAnswer:
\n1. Storage of food<\/p>\n
\nDe-differentiation of cells is the cause of formation of
\n1. Primary meristems
\n2. Secondary meristems
\n3. Apical meristems
\n4. Intercalary meristems
\nAnswer:
\n2. Secondary meristems<\/p>\n
\nEpithelium is
\n1. A protective layer around the dead cell
\n2. Loose mass of parenchyma cells in a lenticel
\n3. A layer of secretory cells present around the schizogenous cavity
\n4. A layer of cells around the vascular bundle
\nAnswer:
\n3. A layer of secretory cells present around the schizogenous cavity<\/p>\n
\nRoots hairs are
\n1) Unicellular branched
\n2) Unicellular unbranched
\n3) Multicellular uniseriated
\n4) Multicellular multiseriated
\nAnswer:
\n2) Unicellular unbranched<\/p>\n
\nThe main function of trichomes is
\n1) Prevention of loss of water
\n2) Opening of stomata
\n3) Protection form herbivores
\n4) Absorption
\nAnswer:
\n1) Prevention of loss of water<\/p>\n
\nScat of the origin of lateral roots is
\n1) Endodermal cells
\n2) Pericycle cells
\n3) Cortical cells
\n4) Epidermal cells
\nAnswer:
\n2) Pericycle cells<\/p>\n
\nLcnticcls help in
\n1) Transpiration only
\n2) Photosynthesis – gaseous exchange
\n3) Respiration – gaseous exchange only
\n4) Respiration and Transpiration
\nAnswer:
\n4) Respiration and Transpiration<\/p>\n
\nIn dicot roots, the vascular cambium is derived from
\n1) Cortex
\n2) Pericycle
\n3) Medulla
\n4) Endodermis
\nAnswer:
\n2) Pericycle<\/p>\n
\nIn monocot stems, each vascular bundle is surrounded by
\n1) Parenchymatous sheath
\n2) Collenchymatous sheath
\n3) Sclerenchymatous sheath
\n4) None
\nAnswer:
\n3) Sclerenchymatous sheath<\/p>\n
\nHypodermis in primary dicot stem is made up of
\n1) Few layer sclerenchyma
\n2) Few layered collenchyma
\n3) Multilayered parenchyma
\n4) Multilayered sclerenchyma
\nAnswer:
\n2) Few layered collenchyma<\/p>\n
\nBarrel shaped cells are associated with
\n1) Endodermis of dicot root
\n2) Endodermis of monocot stem
\n3) Pericycle of dicot root
\n4) Pericycle of monocot root
\nAnswer:
\n1) Endodermis of dicot root<\/p>\n
\nBark includes
\n1. Phellemandphellogen
\n2. Phelloderm and vascular cambium
\n3. All tissues outer to the vascular cambium
\n4. Vascular cambium and secondary phloem
\nAnswer:
\n3. All tissues outer to the vascular cambium<\/p>\n
\nSecondary meristems are found in
\n1. Mature parts
\n2. Growing tips of main stem
\n3. In between mature tissue
\n4. Rootapex
\nAnswer:
\n1. Mature parts<\/p>\n
\nSclerenchyma differs from parenchyma in
\n1. having thick lignified walls
\n2. possessing protoplasts
\n3. having a central vacuole
\n4. showing secretory functions
\nAnswer:
\n1. having thick lignified walls<\/p>\n
\nIn plants, growth occurs in
\n1. Vascular tissues
\n2. Storage tissues
\n3. Meristematic tissues
\n4. Reproductive organs
\nAnswer:
\n3. Meristematic tissues<\/p>\n
\nIn xylem, the main elements of conduction are
\n1. Xylem fibres and tracheids
\n2. Vessels and xylem parenchyma
\n3. Tracheids and vessels
\n4. Xylem fibres and xylem parenchyma
\nAnswer:
\n3. Tracheids and vessels<\/p>\n
\nThe function of ray parenchyma in xylem is
\n1. storage of Water
\n2.upward conduction of water
\n3. downward conduction of water
\n4. radial conduction of water
\nAnswer:
\n4. radial conduction of water<\/p>\n
\nIdentify the non lignified element
\n1. tracheid
\n2. albuminous cell
\n3. vessel
\n4. fibre cell
\nAnswer:
\n2. albuminous cell<\/p>\n
\nStomata regulate
\n1. transpiration
\n2. photosynthesis
\n3. respiration
\n4. osmotic phenomena
\nAnswer:
\n1. transpiration<\/p>\n
\nMesophyll is a type of
\n1. sclerenchyma
\n2. collenchyma
\n3. parenchyma
\n4. meristem
\nAnswer:
\n3. parenchyma<\/p>\n
\nGround tissue is composed of the following except
\n1. cortex
\n2. endodermis
\n3. phloem
\n4. pith
\nAnswer:
\n3. phloem<\/p>\n
\nEndodcrmis is a part of
\n1. outer cortex
\n2. vascular tissue
\n3. inner cortex
\n4. hypodermis
\nAnswer:
\n3. inner cortex<\/p>\n
\nA characterstic feature of monocot root is
\n1. endarch primary xylem
\n2. polyarch primary xylem
\n3. very small pith
\n4. presence of secondary growth
\nAnswer:
\n2. polyarch primary xylem<\/p>\n
\nPresence of lysigcnohs cavities inside the xyleni is a charecterislic feature of
\n1. Dicot stem
\n2. Monocot stem
\n3. Dicot root
\n4. dicot leaf
\nAnswer:
\n2. Monocot stem<\/p>\n
\nEarly wood is formed during
\n1. Favourable conditions
\n2. Leaf fall conditions
\n3. Active monsoons
\n4. Dull monsoons
\nAnswer:
\n1. Favourable conditions<\/p>\n
\nIn a secondary stem which of the following tissues consitute a major bulk
\n1. Primary phloem
\n2. Primary xylem
\n3. Secondary phloem
\n4. Secondary xylem
\nAnswer:
\n4. Secondary xylem<\/p>\n
\nHeart wood is very hard and resistant to attacks from micro organisms due to the deposition of
\n1. Tanins, resins and gums
\n2. Mineral crystals and oils
\n3. Starches, proteins and fats
\n4. Enzymes, hormones, acids
\nAnswer:
\n1. Tanins, resins and gums<\/p>\n
\nThe tissue which is impervious to water is
\n1. Phellogen
\n2. Phellem
\n3. Phelloderm
\n4. Secondary medullary ray
\nAnswer:
\n2. Phellem<\/p>\n
\nPeriderm includes all the following excepting
\n1. Cork
\n2. Corkcambium
\n3. Secondary cortex
\n4. Secondaryphloem
\nAnswer:
\n4. Secondaryphloem<\/p>\n
\nTrichomes present on the stem epidermis
\n1. Promote transpiration
\n2. Prevent transpiration
\n3. Support the growth of microorganisms
\n4. Give strength
\nAnswer:
\n2. Prevent transpiration<\/p>\n
\nBark differs from periderm in having a layer of
\n1. Phellem
\n2. Phellogen
\n3. Phelloderm
\n4. Bast
\nAnswer:
\n1. Phellem<\/p>\n
\nPhellogen is an example of
\n1. Secondary lateral meristem
\n2. Primary lateral meristem
\n3. Intercalary meristem
\n4. Apical meristem
\nAnswer:
\n1. Secondary lateral meristem<\/p>\n
\nIdentify the living tissue from the following
\n1. Pericycle in dicot stem
\n2. Xylem
\n3. Cork tissue
\n4. Cambium
\nAnswer:
\n4. Cambium<\/p>\n
\nWhich of the following is a living cell
\n1. Hypodermal cell of maize stem
\n2. Cells.of cork tissue
\n3. Young phloem fibre cell
\n4. Young xylem fibre cell
\nAnswer:
\n3. Young phloem fibre cell<\/p>\n
\nEndodermis is absent in .
\n1. Dicot stem
\n2. Monocot stem
\n3. Dicotroot
\n4. Monocot root
\nAnswer:
\n2. Monocot stem<\/p>\n
\nBundle sheath cells are
\n1. Chlorophyllous
\n2. Thin walled
\n3. Non living
\n4. Thick walled
\nAnswer:
\n4. Thick walled<\/p>\n
\nRegulated transpiration occurs through
\n1. Epidermis
\n2. Lenticels
\n3. Stomata
\n4. Wounds
\nAnswer:
\n3. Stomata<\/p>\n
\nMeristematic tissues are found in
\n1. Vascular bundles of dicot stem
\n2. Vascular bundles of monocot stem
\n3. Vascular bundles of dicot leaf
\n4. Vascular bundles of monocot root
\nAnswer:
\n1. Vascular bundles of dicot stem<\/p>\n
\nPhcllogen is an example of
\n1. Primary meristem
\n2. Primary lateral meristem
\n3. Intercalary meristem
\n4. Secondary lateral meristem
\nAnswer:
\n4. Secondary lateral meristem<\/p>\n
\nLateral meristcms help the plant in
\n1. Linear gowth
\n2. Radial growth
\n3. Horizontal growth
\n4. Diagonal growth
\nAnswer:
\n2. Radial growth<\/p>\n
\nGrowth of flowers and fruits is initiated by
\n1. Apical meristems
\n2. Intercalary meristems
\n3. Lateral meristems
\n4. Embryonic meristems
\nAnswer:
\n2. Intercalary meristems<\/p>\n
\nA living tissue is
\n1. Sclerenchyma
\n2. Phellogen
\n3. Xylem
\n4. Cork
\nAnswer:
\n2. Phellogen<\/p>\n
\nResin ducts of Pin us belting to ………. category:
\n1. Lysigenous cavity
\n2. Schizogenous cavity
\n3. Pith cavity
\n4. Protoxylem cavity
\nAnswer:
\n2. Schizogenous cavity<\/p>\n
\nMechanical tissues are
\n1. Parenchyma and Collenchyma
\n2. Sclerenchyma and Collenchyma
\n3. Xylem and Phloem
\n4. Meristem and Laficiferous tissue
\nAnswer:
\n2. Sclerenchyma and Collenchyma<\/p>\n
\nLignilied cell walls are found in
\n1. Aerenchyma and Chlorenchyma
\n2. Angular Collenchyma and Lamellar Collenchyma
\n3. Fibers and Sclereids
\n4. Tracheids and Sieve tubes
\nAnswer:
\n3. Fibers and Sclereids<\/p>\n
\nXylent parenchyma helps the plant in
\n1. Conduction of water and salts vertically
\n2. Conduction of water and salts radially
\n3. Storage of starch or fat
\n4. Synthesis of carbophdrates
\nAnswer:
\n3. Storage of starch or fat<\/p>\n
\nTrichomes found in dicot stem are …………
\n1. Unicellular
\n2. Multicellular, uniseriate
\n4. Multicelluiar, multiseriate
\n3. Multicellular, biseriate
\nAnswer:
\n3. Multicellular, biseriate<\/p>\n
\nThe function of buliform cells is
\n1. Regulating the opening and closure of stomata
\n2. Permitting the loss of water from leaf surface
\n3. Causes rolling and unrolling of the leaf
\n4. Giving protection to the inner tissues
\nAnswer:
\n3. Causes rolling and unrolling of the leaf<\/p>\n
\nThe function of root hairs is
\n1. Absorption of water and minerals
\n2. Releasing secretions into soil
\n3. Killing the harmful micro organisms in the soil
\n4. Absorption of water but not minerals
\nAnswer:
\n4. Absorption of water but not minerals<\/p>\n
\nCambium is found in
\n1. Monocot stem
\n2. Dicot stem
\n3. Monocot root
\n4. Dicot leaf
\nAnswer:
\n2. Dicot stem<\/p>\n
\nMedulla is not well developed in
\n1. Monocot root & Dicot stem
\n2. Monocot stem & Dicot root
\n3. Monocot stem & Monocot root
\n4. Dicot root & Monocot root
\nAnswer:
\n2. Monocot stem & Dicot root<\/p>\n
\nMonocot root differs from dicot root in the
\n1. presence of relatively bigger cortex
\n2. presence of tetrarch xylem
\n3. occurance of secondary growth
\n4. absence of medulla
\nAnswer:
\n1. presence of relatively bigger cortex<\/p>\n
\nThe type of vascular cylinder in Helianthus stem is called
\n1. Atactostele
\n2. Dictyostele
\n3. Meristele
\n4. Eustele
\nAnswer:
\n4. Eustele<\/p>\n
\nWhich of the following is present in Monocot stem
\n1. Phloem parenchyma
\n2. Medullary rays
\n3. Pericycle
\n4. Xylem parenchyma
\nAnswer:
\n4. Xylem parenchyma<\/p>\n
\nDicot stem differs from monocot stem in character
\n1. Collenchymatoushypodermis
\n2. Sclerenchymatoushypodermis
\n3. Oval shaped vascular bundles
\n4. Presence of protoxylem lacunae
\nAnswer:
\n1. Collenchymatoushypodermis<\/p>\n
\nThe guard cells in the epidermis of Helianthus leaf are
\n1. Spherical
\n2. Reniform
\n3. Bulliform
\n4. Cylindrical
\nAnswer:
\n2. Reniform<\/p>\n
\nTissues are classified into two main groups, namely, meristematic and permanent tissues based on
\n1) Position and location
\n2) Function, position and location
\n3) Whether the cells being formed are capable of dividing or not
\n4) Structure, function position and location
\nAnswer:
\n3) Whether the cells being formed are capable of dividing or not<\/p>\n
\nWhich of the following is(are) complex tissue(s)
\n1) Parenchyma
\n2) Phloem
\n3) Xylem
\n4) Both 2 and 3
\nAnswer:
\n4) Both 2 and 3<\/p>\n
\nGrowth in plants is largely restricted to specialized regions of active cell division, called
\n1) Meristems
\n2) Cambium
\n3) Primordium
\n4) Permanent tissue
\nAnswer:
\n1) Meristems<\/p>\n
\nWhich of the following characteristic is not found in parenchyma?
\n1) It forms the major component within organs
\n2) Their walls are thick and made up of cellulose
\n3) They may either be closely packed or have small intercellular spaces
\n4) The parenchyma performs various functions like photosynthesis, storage and secretion
\nAnswer:
\n2) Their walls are thick and made up of cellulose<\/p>\n
\nIntercalary meristem is derivative of
\n1) Promeristem
\n2) Primary meristem
\n3) Lateral meristem
\n4) Secondary meristem
\nAnswer:
\n2) Primary meristem<\/p>\n
\nThe sclerenchymatous sclereids are found in
\n1) Fruit walls of legumes
\n2) Pulp of fruits like, guava, pear and sapota; leaves of tea
\n3) Seed coat of nuts
\n4) All of the above
\nAnswer:
\n4) All of the above<\/p>\n
\nThe cells or tissues of plants wihich have lost the power of division are called:
\n1) meristematic
\n2) permanent
\n3) protoderm
\n4) promeristem
\nAnswer:
\n2) permanent<\/p>\n
\nLength of petiole increases by the activity of
\n1) Apical meristem
\n2) Lateral meristem
\n3) Intercalary meristem
\n4) All the above
\nAnswer:
\n3) Intercalary meristem<\/p>\n
\nIdentify the plant tissue in which lignin is absent
\n1) Collenchyma
\n2) Sclerenchyma fibres
\n3) Sclereids
\n4) Xylem tracheids
\nAnswer:
\n3) Sclereids<\/p>\n
\nWhich one of the following comprises only simple tissues?
\n1) Parenchyma, collenchyma and sclerenchyma
\n2) Parenchyma, xylem and collenchyma
\n3) Parenchyma, xylem and sclerenchyma
\n4) Xylem and phloem
\nAnswer:
\n1) Parenchyma, collenchyma and sclerenchyma<\/p>\n
\nChlorenchyma cells are
\n1) Chlorophyll-containing sclerenchyma cells
\n2) Chlorophyll-containing epidermis
\n3) Chlorophyll-containing parenchyma
\n4) Chlorophyll-containing phloem
\nAnswer:
\n3) Chlorophyll-containing parenchyma<\/p>\n
\nVessels are characteristic of
\n1) Angiosperms only
\n2) Gymnosperms only
\n3 ) Pteridophytes only
\n4) None of the above
\nAnswer:
\n1) Angiosperms only<\/p>\n
\nWhich one of the following tissue does not possess living protoplasm?
\n1) endarch
\n2) diarch
\n3) poly arch
\n4) exarch
\nAnswer:
\n2) diarch<\/p>\n
\nThe centrifugal arrangement of the xylem is called
\n1) Collenchyma
\n2) Sclerenchyma
\n3) Parenchyma
\n4) Parenchyma
\nAnswer:
\n1) Collenchyma<\/p>\n
\nA living component of xylem element is
\n1) Xylem tracheid\u2019s
\n2) Xylem vessels
\n3) Xylem fibres
\n4) Xylem parenchyma
\nAnswer:
\n4) Xylem parenchyma<\/p>\n
\nAlbuminous cells of gymnosperms are equivalent to
\n1) Seive tubes
\n2) Seive cells
\n3) Companion cells
\n4) Cork cambium
\nAnswer:
\n3) Companion cells<\/p>\n
\nWhich are the following cells of phloem helps in maintaining \u201cpressure gradient in sieve tubes\u201d
\n1) Phloem parenchyma
\n2) Companion cells
\n3) Phloem fibres
\n4) Sieve cells
\nAnswer:
\n2) Companion cells<\/p>\n
\nA conjoint and open vascular bundle will be observed in the transverse section of
\n1) Monocot root
\n2) Monocot stem
\n3) Dicot root
\n4) Dicot stem
\nAnswer:
\n4) Dicot stem<\/p>\n
\nSelect the correct match
\n1) Starch sheath – Epidermis
\n2) Trichoblast – Endodermis
\n3) Lateral conduction – Medullary rays
\n4) Palisade and spongy – Bundle sheath
\nAnswer:
\n3) Lateral conduction – Medullary rays<\/p>\n
\nThe innermost layer of cortex shows the following distinguishing character
\n1) The radial walls are thickened by pecto cellulose bands
\n2) The transverse walls are wrapped by suberized band
\n3) The radial walls are thickened by cutinized band
\n4) The transverse walls are thickened by chitinous band
\nAnswer:
\n3) The radial walls are thickened by cutinized band<\/p>\n
\nWater containing cavity within the vascular bundle of monocot stem is
\n1) Mucilage canal
\n2) Lisogenous cavity
\n3) Schizogenous cavity
\n4) Resin duct
\nAnswer:
\n2) Lisogenous cavity<\/p>\n
\nSeat of the origin of trichomes is
\n1) Endodermal cells
\n2) Pericycle cells
\n3) Cortical cells
\n4) Epidermal cells
\nAnswer:
\n4) Epidermal cells<\/p>\n
\nWhich of the following pairs show very large pith
\n1) Sunflower stem & maize stem
\n2) Sunflower stem & maize root
\n3) Sunflower root & maize stem
\n4) Maize root & sunflower root
\nAnswer:
\n2) Sunflower stem & maize root<\/p>\n
\nIn xylem, the main elements of conduction are
\n1) Xylem fibres and trachieds
\n2) Vessels and xylem parenchyma
\n3) Tracheids and Vessels
\n4) Xylem fibres and xylem parenchyma
\nAnswer:
\n3) Tracheids and Vessels<\/p>\n
\nSelect the mismatch
\n1) Cuticle – prevents the water loss
\n2) Root hairs – absorption
\n3) Mesophyll – photosynthesis
\n4) subsidiary cells – photosynthesis
\nAnswer:
\n4) subsidiary cells – photosynthesis<\/p>\n
\nThe water impcrable cell wall material present on the radial and tangential walls of endodermal cells is
\n1) Cellulose
\n2) Suberin & lignin
\n3) Pectin
\n4) Cutin
\nAnswer:
\n2) Suberin & lignin<\/p>\n
\nBulliform cells help in unrolling of leaves when they are in
\n1) Flaccid condition
\n2) Plasmolysed condition
\n3) Turgid condition
\n4) Disintegrated condition
\nAnswer:
\n3) Turgid condition<\/p>\n
\nWhich of the following is incorrect about isobiiateral leaf?
\n1) Stomata present on both surfaces
\n2) Undifferentiated mesophyll
\n3) Nearly same size vascular bundle present all over leaf
\n4) It is a monocot leaf
\nAnswer:
\n3) Nearly same size vascular bundle present all over leaf<\/p>\n
\nIn a dorsiventral leaf, location of palisade tissue and phloem are known as
\n1) abaxial and abaxial
\n2) adaxial and abaxial
\n3) adaxial and adaxial
\n4) abaxial and adaxial
\nAnswer:
\n2) adaxial and abaxial<\/p>\n
\nOther names of secondary cortex, cork cambium and cork are
\n1) phellem, phelloderm and phellogen
\n2) phellogen, phelem and phelloderm
\n3) phelloderm, phellogen and phellem
\n4) phellogen, phelloderm and phellem
\nAnswer:
\n3) phelloderm, phellogen and phellem<\/p>\n
\nAnnual rings are distinct in plants growing in
\n1) phellem, phelloderm and phellogen
\n2) phellogen, phelem and phelloderm
\n3) phelloderm, phellogen and phellem
\n4) phellogen, phelloderm and phellem
\nAnswer:
\n4) phellogen, phelloderm and phellem<\/p>\n
\nWhich statement is not true regarding the secondary growth in dicot roots?
\n1) The vascular cambium appears wavy due to collateral nature of bundles
\n2) Cambium is formed by conjunctive tissue
\n3) Cells infront of protoxylem becomes meristematic
\n4) Secondary xylem is formed inside vascular cambium
\nAnswer:
\n3) Cells infront of protoxylem becomes meristematic<\/p>\n
\nVascular cambium is formed by
\nI) interfascicular cambium
\nII) Intrafascicular cambium
\nIII) Cork cambium
\n1) I and III only
\n2) II and III only
\n3) I, II and III only
\n4) I and II only
\nAnswer:
\n4) I and II only<\/p>\n
\nStructure absent in monocot stem
\nI) Pericycle
\nII) Meduiary rays
\nIII) Medulla
\nIV) Endodermis
\nV) Phloem parenchyma
\n1) I, II, IV only
\n2) I, III, IV only
\n3) I, II, IV, V only
\n4) I, II, III, IV & V
\nAnswer:
\n4) I, II, III, IV & V<\/p>\n
\nAs a tree grows older, which of the following increases more rapidly In thickness?
\n1) Heartwood
\n2) Sapwood
\n3) Phloem
\n4) Cortex
\nAnswer:
\n1) Heartwood<\/p>\n","protected":false},"excerpt":{"rendered":"