Class 7 Science Chapter 2 MCQ Nutrition in Animals
MCQ on Nutrition in Animals Class 7
Select and write the most appropriate option out of the four options given
I. Multiple Choice Questions
Question 1.
The breakdown of complex components of food into simpler substances is called
A) Exeretion
B) Respiration
C) Digestion
D) Absorption
Answer:
C) Digestion
Question 2.
The enzyme present in saliva is …………
A) Bile
B) Pepsin
C) HCl
D) Salivary amylase
Answer:
D) Salivary amylase
Question 3.
The number of milk is …………
A) 16
B) 12
C) 18
D) 20
Answer:
C) 18
Question 4.
The milk teeth fall of at the age between …………
A) 6-8 years
B) 10-12 years
C) 9-11 years
D) 12-14 years
Answer:
A) 6-8 years
Question 5.
The number of permanent teeth in adult human are …………
A) 32
B) 36
C) 38
D) 40
Answer:
A) 32
Question 6.
Siphoning type of ingestion of food is seen in …………
A) Butterfly
B) Housefly
C) Mosquito
D) Leech
Answer:
A) Butterfly
Question 7.
The food of humming bird is …………
A) Insects
B) Leaves
C) Nectar
D) Litter
Answer:
C) Nectar
Question 8.
Incisors are useful to …………
A) biting
B) piercing
C) grinding
D) chewing
Answer:
A) biting
Question 9.
Canines are well developed in …………
A) Herbivores
B) Carnivores
C) Humans
D) camel
Answer:
B) Carnivores
Question 10.
The use of canines is ………..
A) tearing of food
B) biting of food
C) grinding of food
D) chewing of food
Answer:
A) tearing of food
Question 11.
Premolars and molars are useful for …………
A) biting a fruit
B) tearing the piece of meat
C) grinding the peanuts
D) none of the above
Answer:
C) grinding the peanuts
Question 12.
Salivary amylase acts on …………
A) Carbohydrates
B) Proteins
C) Fats
D) Vitamins
Answer:
A) Carbohydrates
Question 13.
The main reason for tooth decay is eating of …………
A) Chocolates
B) Sweets
C) Soft drinks
D) All the above
Answer:
D) All the above
Question 14.
These are used to remove the trapped food particles between the teeth are …………
A) Dental floss
B) Tooth picks
C) Mouth wash
D) None of the above
Answer:
A) Dental floss
Question 15.
Iodine turns the starch colour into …………
A) black
B) blue-black
C) red
D) yellow
Answer:
B) blue-black
Question 16.
Sweetness recognising taste buds are present …………
A) At the tip of the tongue
B) Sides of the tongue
C) Middle of the tongue
D) Upper region of the tongue
Answer:
A) At the tip of the tongue
Question 17.
Taste buds are present on …………
A) Skin
B) Hair
C) Tongue
D) Eyes
Answer:
C) Tongue
Question 18.
Digestion begins at …………
A) Buccal cavity
B) Stomach
C) Large intestine
D) Small intestine
Answer:
A) Buccal cavity
Question 19.
The use of saliva in mouth is …………
A) to make the masticated food slippery to swallow
B) to make the medium of mouth alkaline
C) to kill the microbes present in the food
D) all the above
Answer:
D) all the above
Question 20.
The food is churned here …………
A) stomach
B) mouth
C) small intestine
D) large intestine
Answer:
A) stomach
Question 21.
The inner walls of the stomach secretes …………
A) hydrochloric acid
B) gastric juices
C) mucous
D) all the above
Answer:
D) all the above
Question 22.
The function of HCl in stomach is ………..
A) to kill the bacteria present in the food
B) to make medium of digestion acidic
C) to increase the hunger
D) A and B
Answer:
D) A and B
Question 23.
The largest gland of our body is …………
A) salivary glands
B) liver
C) pancreas
D) sweat glands
Answer:
B) liver
Question 24.
The reddish brown coloured gland situated in the upper part of the abdomen on the right side is …………
A) pancreas
B) liver
C) small intestine
D) rectum
Answer:
B) liver
Question 25.
The juice secreted by liver is …………
A) bile
B) pancreatic juice
C) hydrochloric acid
D) mucous
Answer:
A) bile
Question 26.
The large cream coloured gland present just below the stomach is. ………… [ ]
A) liver
B) pancreas
C) small intestine
D) large intestine
Answer:
B) pancreas
Question 27.
Pancreatic juice acts on …………
A) carbohydrates
B) proteins
C) fats
D) all the above
Answer:
D) all the above
Question 28.
Absorption of digested food occurs in …………
A) stomach
B) small intestine
C) large intestine
D) rectum
Answer:
B) small intestine
Question 29.
Thousands of finger like projections present on the inner walls of small intestine are …………
A) Villi
B) Rectum
C) Anus
D) Liver
Answer:
A) Villi
Question 31.
ORS consists of …………
A) Water + Salt + Turmeric powder
B) Boiled and cooled water + Salt +Sugar
C) Lemon water + Salt
D) Water + Lemon juice + Sugar
Answer:
B) Boiled and cooled water + Salt +Sugar
Question 32.
Assimilation process is carried out by …………
A) Blood
B) Liver
C) Pancreas
D) Small intestine
Answer:
B) Liver
Question 33.
The main function of large intestine is to …………
A) absorb water from the undigested waste and some salts
B) digestion of fats
C) digestion of proteins
D) digestion of carbohydrates
Answer:
A) absorb water from the undigested waste and some salts
Question 34.
Undigested waste is stored for sometime in …………
A) Rectum
B) Caecum
C) Anus
D) liver
Answer:
A) Rectum
Question 35.
Egestion of undigested food occurs through …………
A) Rectum
B) Anus
C) Penis
D) Liver
Answer:
B) Anus
Question 35.
Egestion of undigested food occurs through …………
A) Rectum
B) Anus
C) Penis
D) None
Answer:
B) Anus
Question 36.
In ruminants, after eating the grass quickly, they store it in …………
A) Rumen
B) Large intestine
C) Caecum
D) Stomach
Answer:
A) Rumen
Question 37.
In Ruminants, Cellulose is digested in …………
A) Caecum
B) Stomach
C) Large intestine
D) Small intestine
Answer:
A) Caecum
Question 38.
Amoeba gets it’s food with the help of …………
A) Pseudopodia
B) Cytoplasm
C) Nucleus
D) Food vacuole
Answer:
A) Pseudopodia
Question 39.
The grass is rich in …………
A) Cellulose
B) Glucose
C) Proteins
D) Fats
Answer:
A) Cellulose
Question 40.
The digestion in Amoeba takes place in …………
A) Food vacuole
B) Cytoplasm
C) Nucleus
D) Pseudopodia
Answer:
A) Food vacuole
II. Fill in the blanks
1. Taste buds are present on …………
Answer: Tongue
2. The inner lining of the stomach secretes …………
Answer: HCl , mucous and gastric juice
3. Liver secretes ………… juice.
Answer: Bile
4. Bile juice is stored in …………
Answer: gall bladder
5. The reddish brown coloured digestive gland is …………
Answer: Liver
6. Pancreatic juice acts on …………
Answer: Carbohydrates, proteins, fats
7. The end product of carbohydrates is …………
Answer: Glucose
8. The end product of proteins is …………
Answer: Amino acids
9. The finger like projections on inner walls of small intestine is called …………
Answer: Villi
10. Example for ruminants …………
Answer: Cow, horse
11. ………… is used to treat diarrhoea.
Answer: Oral Rehydration Solution (ORS)
12. Locomotary organells of Amoeba are ………..
Answer: Pseudopodia
13. Digestion of cellulose is assisted by ………..
Answer: Bacteria
14. Mucous protects the digestive tract from the action of ………..
Answer: HCl
15. The aim of the above experiment is …………
Answer: Effect of Saliva on Starch
16. If by chance, food particles enter the wind pipe …………
Answer: We feel choked, get hiccups or cough
17. Undigested foods are stored in …………
Answer: Rectum
18. The partially digested food in rumen is called …………
Answer: Cud
19. In humans, cellulose does not digest in the reason for this is …………
Answer: Cellulose digesting bacteria are not present in human digestive system
20. Complete digestion of food occurs in …………
Answer: small intestine
21. Pseudopodia is also known as …………
Answer: False feet
22. Teeth in our mouth helps in …………
Answer: Mechanical breakdown of food materials
23. ………… teeth helps in biting of an apple.
Answer: Incisors
24. Biting and cutting teeth are …………
Answer: Incisors
25. Piercing and tearing type of teeth are …………
Answer: Canines
26. Chewing and grinding teeth are …………
Answer: Molars and premolars
27. The labelled part X in the above figure is …………
Answer: Stomach
28. Function of villi is …………
Answer: To increase the area of absorption
29. O.R.S means …………
Answer: Oral Rehydration Solution
30. Passing of watery stool frequently is known as …………
Answer: Diarrhoea
31. The length of small intestine is …………
Answer: 7.5 metres
32. The length of large intestine is …………
Answer: 1.5 metres
33. The length of alimentary canal is …………
Answer: 9 metres
34. Amoeba is a ………… celled organism.
Answer: single
35. National Deworming Day is …………
Answer: Feb. 10 and Aug. 10
36. Number of teeth present in our mouth is …………
Answer: 32
37. Number of molars present in our mouth is …………
Answer: 12
38. Number of canines present in our mouth is …………
Answer: 4
39. Number of incisors present in our mouth is …………
Answer: 8
40. Carbohydrates digests first in …………
Answer: Buccal cavity
41. Consuming chocolates, soft drinks and other sugar products cause of …………
Answer: Tooth decay
42. The process of intake and utilization of food by organisms is called …………
Answer: Nutrition
43. Glucose is stored in the form of ………… in plants.
Answer: Starch
44. The hardest part of the human body is …………
Answer: Enamel
45. The number of teeth present in the lower jaw of human beings is …………
Answer: 16
46. The narrow tube which connects pharynx and stomach is …………
Answer: Oesophagus
47. The common chamber for both digestive track and respiratory system is …………
Answer: Pharynx
48. Irregular meals causes …………
Answer: Acidity
49. Food is taken into the body is known as …………
Answer: Ingestion
50. False feet of Andoeba are …………
Answer: Pseudopodia
51. Cow, buffalo, horse, rabbit are examples for …………
Answer: Ruminants
III. True Or False
Identify the following statements are True or False.
1. The breakdown of complex components of food into simpler substances is called digestion.[ ]
Answer: True
2. The mode of feeding in eagle is sucking. [ ]
Answer: False. The mode of feeding in eagle is capturing and swallowing
3. The liver is the largest gland in our body. [ ]
Answer: True
4. The egestion of undigested food is through anus. [ ]
Answer: True
5. Salivary amylase acts on carbohydrates and convert them into simpler sugars. [ ]
Answer: True
6. Bile juice acts on proteins. [ ]
Answer: False: Bile juice acts on fats.
7. Bile juice is tempararily stored in pancreas. [ ]
Answer: False. Bile juice is tempararily stored in gall bladder.
8. Canines are well developed in carnivores. [ ]
Answer: True
9. Total number of incisors in a adult human is 8. [ ]
Answer: True
10. Eating of chocolates and sweets leads to tooth decay. [ ]
Answer: True