MCQ on Cell Structure and Functions Class 8
Choose the correct answer :
Question 1.
The basic structural unit of all living organisms is …………………
A) Organ
B) Tissue
C) Cell
D) Organsystem
Answer:
C) Cell
Question 2.
Robert Hooke is associated with the following tree-
A) Neem
B) Oak
C) Mango
D) Tamarind
Answer:
B) Oak
Question 3.
The jelly like substance between nucleus and cell membrane
A) Cytoplasm
B) Nucleolus
C) Chloroplast
D) None of the above
Answer:
A) Cytoplasm
Question 4.
Which of the following is an example for unicellular organism ?
A) Amoeba
B) Euglena
C) Paramoecium
D) All the above
Answer:
D) All the above
Question 5.
The function of Pseudopodia is
A) Locomotion
B) Reproduction
C) Capturing of food
D) A and C
Answer:
D) A and C
Question 6.
The main purpose of bark is
A) Conduction
B) Protection
C) Respiration
D) Photsynthesis
Answer:
B) Protection
Question 7.
Which of the following had played a key role in the discovery of cell world ?
A) Periscope
B) Telescope
C) Microscope
D) Keledeoscope
Answer:
C) Microscope
Question 8.
The size of the organism is depending on ………………
A) The size of the cells
B) The number of cells present
C) The shape of the cells
D) None
Answer:
B) The number of cells present
Question 9.
The main function of cell wall is
A) Giving rigidity to cell
B) Giving shape
C) Protection from climate
D) All the above
Answer:
D) All the above
Question 10.
Identify the mis-matched pair.
Group – A | Group – B |
1. Stain | A) Plant |
2. Centriole | B) Animal cell |
3. Cell wall | C) Methylene blue |
A) only 1
B) 1, 2
C) 1, 3
D) 2, 3
Answer:
C) 1, 3
Question 11.
The shape of RBC is ………………….
A) Round
B) Spindle
C) Concave
D) A and C
Answer:
D) A and C
Question 12.
The round dense body in the cell is known as …………………
A) Cell membrane
B) Nucleolus
C) Nucleus
D) Cell wall
Answer:
C) Nucleus
Question 13.
The smallest cell is ………………
A) Bacteria cell
B) Alagae cell
C) Fungal cell
D) None of the above
Answer:
A) Bacteria cell
Question 14.
Which of the following is a plastid ?
A) Ribosome
B) Lysosome
C) Mitochondria
D) Chloroplast
Answer:
D) Chloroplast
Question 15.
Which of the following is considered as “control centre of all cellular activities” ?
A) Mitochondria
B) Chromosomes
C) Genes
D) Nucleus
Answer:
D) Nucleus
Question 16.
Who discovered cell for the first time?
A) Robert Hooke
B) Robert Brown
C) Robert Frost
D) Robert Johnson
Answer:
A) Robert Hooke
Question 17.
Which of the following is necessary for the preparation of slide ?
A) Dropper
B) Needle
C) Cover slip
D) All the above
Answer:
D) All the above
Question 18.
Which of the following is an example for prokaryotic cell ?
A) Blue – green algae
B) Bacteria
C) Virus
D) A and B
Answer:
D) A and B
Question 19.
Brain is composed of ……………….
A) Red blood cells
B) Smooth muscle cell
C) Nerve cell
D) Bone cell
Answer:
C) Nerve cell
Question 20.
Name the unicellular organism shown in the above picture.
A) Amoeba
B) Paramoecium
C) Euglena
D) Chlamydomonas
Answer:
A) Amoeba
Question 21.
Identify the unicellular organism shown in the above picture :
A) Amoeba
B) Euglena
C) Bacteria
D) Paramoecium
Answer:
D) Paramoecium
Question 22.
Identify the cells shown in the above picture.
A) Red blood cells
B) Muscle cell
C) Nerve cell
D) Bone cell
Answer:
A) Red blood cells
Question 23.
Who am I ?
A) Red blood cells
B) Muscle cell
C) Nerve cell
D) Bone cell
Answer:
B) Muscle cell
Question 24.
Who am I ?
A) Nerve cell
B) Muscle cell
C) Bone cell
D) Red blood cell
Answer:
A) Nerve cell
Question 25.
Name the labelled part ‘X’ in the above picture.
A) Cytoplasm
B) Nucleus
C) Cell wall
D) Nucleolus
Answer:
B) Nucleus
Question 26.
Name the cells shown in the above picture.
A) Cells in onion peel
B) Human cheek cells
C) Cells in Tradescantia
D) Cells in Rheo
Answer:
B) Human cheek cells
Question 27.
Identify the labelled part ‘X’ in the above figure.
A) Cell membrane
B) Cell wall
C) Chloroplast
D) Nucleus
Answer:
B) Cell wall
Question 28.
Identify the labelled part ‘X’.
A) Vacuole
B) Cytoplasm
C) Nucleus
D) Chloroplast
Answer:
C) Nucleus
Question 29.
Which of the following is the biggest cell ?
A) Nerve cell
B) Ostrich bird’s egg
C) Muscle cell
D) Red blood cell
Answer:
B) Ostrich bird’s egg
Question 30.
Which of the following determines the function of a cell ………………
A) Size of the cell
B) Shape of the cell
C) Both size and shape of the cell
D) Organelles of the cell
Answer:
C) Both size and shape of the cell
Question 31.
Example for a single cell ………………..
A) WBC
B) Hen’s egg
C) Chlamydomonas
D) All the above
Answer:
B) Hen’s egg
Question 32.
A billion = ………………..
A) A hundred million
B) A ten thousand million
C) A thousand million
D) A ten bullion
Answer:
C) A thousand million
Question 33.
A trillion = ………………..
A) A hundred billion
B) A thousand billion
C) A ten thousand million
D) A ten billion
Answer:
B) A thousand billion
Question 34.
Ostrich’s egg measures about
A) 170 mm × 165 mm
B) 170 mm × 130 mm
C) 180 mm × 150 mm
D) 190 mm × 100 mm
Answer:
B) 170 mm × 130 mm
Question 35.
A non-living tissue is ………………..
A) Bark
B) Cell wall
C) Cytoplasm
D) Nuclear membrane
Answer:
B) Cell wall
Question 36.
“Sites of photosynthesis” are …………….
A) Chloroplast
B) Nucleus
C) Nucleolus
D) cytoplasm
Answer:
A) Chloroplast
Question 37.
Units of heredity ………………..
A) Plasma membrane
B) Genes
C) Ribosomes
D) Cell wall
Answer:
B) Genes
Question 38.
A well developed nucleus with nuclear membrane is present in ………………..
A) Blue green algae
B) Bacteria
C) Neem plant
D) None of the above
Answer:
C) Neem plant
Question 39.
Cell wall gives ………………..
A) Rigidity
B) Mechanical strength
C) Shape
D) All the above
Answer:
D) All the above
Question 40.
The function of vacuole in plant cell is ………………..
A) storage of food
B) digestion
C) excretion
D) reproduction
Answer:
A) storage of food
Question 41.
Cell wall of plant is made of
A) cellulose
B) glucose
C) protein
D) lignin
Answer:
A) cellulose
Question 42.
The colour of chlorophyll pigment present in chloroplast is ………………..
A) red
B) green
C) yellow
D) blue
Answer:
B) green
Question 43.
Which of the following is a stain ?
A) Methylene blue
B) Iodine
C) Saffranine
D) All the above
Answer:
D) All the above
Question 44.
Cheek cells do not have ………………..
A) Nucleus
B) Cytoplasm
C) Cell wall
D) Plasma membrane
Answer:
C) Cell wall
Question 45.
The structure of neuron is ………………..
A) spindle
B) concave
C) tree
D) round
Answer:
C) tree
Question 46.
Which of the following cells do not have nucleus ?
A) RBC
B) WBC
C) Muscle cell
D) Neuron
Answer:
A) RBC
Question 47.
Heterogeneous substance is ……………….
A) Cytoplasm
B) Cell wall
C) Plasma membrane
D) Vacuole
Answer:
A) Cytoplasm
Question 48.
Which one of the following is not the part of the nucleus ?
A) Ribosome
B) Nucleolus
C) Chromosome
D) Gene
Answer:
A) Ribosome
Question 49.
A tissue is composed of a group of ………………..
A) Cells that have the same origin carrying out the same function
B) Cells that are identical cells but carrying out different functions
C) Organ systems working together
D) Different organs working together
Answer:
A) Cells that have the same origin carrying out the same function
Question 50.
Which of the following can be found in BOTH a plant cell and an animal cell?
P) Cell wall
Q) Cytoplasm
R) Chloroplast
A) Only P
B) Only Q
C) Only P and Q
D) Only Q and R
Answer:
B) Only Q
Question 51.
Which of the following is TRUE about the nuclear membrane ?
A) It extends to form the cell membrane.
B) It is the site of energy generation for the nucleus.
C) It allows exchange of different materials between the cytoplasm and the nucleus.
D) It controls the entry and exit of DNA molecules between the cytoplasm and the nucleus.
Answer:
C) It allows exchange of different materials between the cytoplasm and the nucleus.
Question 52.
Which one of the following sentences is TRUE?
P) All the cells of a whale are much larger than those of a honeybee.
Q) All the cells of the whale and the honeybee are exactly the same size.
R) There are more cells in a whale than in a honey bee.
A) Only P
B) Only Q
C) Only R
D) Only P and R
Answer:
C) Only R
Question 53.
Which of the organisms listed below is/are made up of a SINGLE cells ?
A) Only amoeba
B) Only amoeba and earthworm
C) Only amoeba, earthworm and mushroom
D) All – apple tree, amoeba, earthworm and mushroom
Answer:
A) Only amoeba
Question 54.
The four images shown below- are of different cells taken from a human
Why do these cells look different from each other ?
A) They have a different age
B) They have a different functions
C) They have a different set of genes
D) They are found in a different part of the body
Answer:
B) They have a different functions
Question 55.
All living things are made of ……………….
A) Tissues
B) Organs
C) Cells
D) Water
Answer:
A) Tissues
Question 56.
Which of the following best describes the function of a ceil membrane ?
P) It maintains the shape of the cell.
Q) It controls movement of materials between the cytoplasm and the inside of the
nucleus.
R) it controls movement of materials between the cytoplasm and the environment
outside the cell.
A) Only P
B) Only P and R
C) Only Q and R
D) All P, Q and R
Answer:
D) All P, Q and R
Question 57.
Which of the following scientists discovered cell in cork slices?
A) Robert Hooke
B) Cart Linnaeus
C) Antonie Van Leeuwenhoek
D) Louis Pasteur
Answer:
A) Robert Hooke
Question 58.
The Jelly – like fluid substance present in cells is called
A) Nucleus
B) Chloroplast
C) Chromosomes
D) Cytoplasm
Answer:
D) Cytoplasm
Question 59.
Which of the following is TRUE about the nuclear membrane ?
A) It extends to form the cell membrane.
B) It is the site of energy generation for the nucleus.
C) It allows exchange of different materials between the cytoplasm and the nucleus.
D) It controls the entry and exit of DNA molecules between the cytoplasm and the nucleus.
Answer:
B) It is the site of energy generation for the nucleus.
Fill in the blanks :
1. The basic structural units in a living organisms is ………………..
Answer:
cell
2. Organisms made of more than one cell are called ………………..
Answer:
multicellular organisms
3. The projections protruding out of Amoeba’s body are ……………….
Answer:
pseudopodia
4. The cytoplasm and the nucleus together is called …………………
Answer:
protoplasm
5. Bacteria and blue green algae are the examples of ………………..
Answer:
prokaryotes
6. The shape of cell is generally …………………..
Answer:
round
7. The term ‘cell’ was coined by ………………….
Answer:
Robert Hooke
8. The largest cell is that of ………………….
Answer:
egg of an ostrich (170 mm × 130 mm)
9. Several small coloured bodies in the cytoplasm of plant cells are …………………
Answer:
plastids
10. Blank – looking structures in the cytoplasm are ………………..
Answer:
vacuoles
11. A group of similar cells that are specialised to perform a specific function is called a ………………….
Answer:
Tissue