Class 7 Science Chapter 2 Practice Question Answers - Nutrition in Animals

Q1. Which of the following is not a part of digestive system ?
(a) Mouth cavity
(b) Stomach
(c) Food pipe
(d) Wind pipe
Ans: (d)
Wind pipe is not a part of digestive system.

Q2. The largest gland in our body is:
(a) Liver
(b) Salivary gland
(c) Pancreas
(d) Gallbladder
Ans: (a)
The largest gland in our body is liver.

Q3. The acid secreted in the stomach is:
(a) Hydrochloric acid
(b) Sulphuric acid
(c) Phosphoric acid
(d) Nitric acid
Ans: (a)
The acid secreted in our stomach is hydrochloric acid.

Q4. The components of food absorbed in large intestine is:
(a) Carbohydrate
(b) Protein
(c) Water
(d) Fats
Ans: (c)
The component of food absorbed in large intestine is water.

Q5. Bile is produced by:
(a) Small intestine
(b) Gallbladder
(c) Liver
(d) Pancreas
Ans: (c)
Bile is produced by Liver

Q6. Bile plays an important role in the digestion of:
(a) Proteins
(b) Starch
(c) Fats
(d) None of these
Ans: (c)
Bile plays an important role in the digestion of fats.

Q7. The intestinal juice digests the fats into:
(a) Fatty acids
(b) Glycerol
(c) Fatty acid and glycerol
(d) Amino acids
Ans: (c)
The intestinal juice digests the fats into fatty acid and glycerol.

Q8. The intestinal juice digests the proteins into:
(a) Fatty acids
(b) Glycerol
(c) Amino acids
(d) None of these
Ans: (c)
The intestinal juice digests the proteins into amino acids.

Q9. The removing of faecal matter through the anus is called:
(a) Digestion
(b) Absorption
(c) Egestion
(d) None of these
Ans: (c)
The removing of faecal matter through the anus is called egestion.

Q10. Humans can digest cellulose:
(a) Yes
(b) No
(c) Can’t say
(d) None of these
Ans: (b)
Humans cannot digest cellulose.

Q11. Saliva breaks down the:
(a) Starch into amino acids
(b) Proteins into amino acids
(c) Starch into sugar
(d) None of these
Ans: (c)
Saliva breaks down the starch into sugar.

Q12. Left over food in teeth release, which gradually damages teeth.
(a) bases
(b) salts
(c) acids
(d) none of these
Ans: (c)
Left over food in teeth release acids which gradually damages teeth.

Q13. The front part of tongue is sensitive to which of the following taste ?
(a) Sweet
(b) Sour
(c) Salty
(d) Bitter
Ans: (a)
The front part of tongue is sensitive to sweet taste.

Q14. The digestion of starch starts in:
(a) Mouth
(b) Stomach
(c) Small intestine
(d) None of these
Ans: (a)
The digestion of starch starts in mouth.

Q15. The part of digestive system where no digestion takes place is:
(a) Mouth
(b) Stomach
(c) Oesophagus
(d) Small intestine
Ans: (c)
Oesophagus is a part of digestive system where no digestion takes place.

Q16. The digestion of food starts in which part of the digestive system:
(a) Small intestine
(b) Stomach
(c) Mouth
(d) Large intestine
Ans: (c)
The digestion of food starts in mouth.

Q17. Which of the following is digested in mouth ?
(a) Sugar
(b) Protein
(c) Starch
(d) All the above
Ans: (c)
Starch is digested in mouth.

Q18. The digestion of food ends in which part of the digestive system ?
(a) Mouth
(b) Stomach
(c) Small intestine
(d) Large intestine
Ans: (c)
The digestion of food ends in small intestine of the digestive system.

Q19. Which teeth in the mouth are used for cutting and tearing ?
(a) Molar
(b) Incisors
(c) Premolar
(d) Canine
Ans: (d)
Canine are used for cutting and tearing.

Q20. The end part of tongue is sensitive to which of the following taste ?
(a) Sweet
(b) Sour
(c) Salty
(d) Bitter
Ans: (d)
The end part of tongue is sensitive to bitter taste.

Q21. In amoeba, ingestion of food takes place with the help of:
(a) Tentacles
(b) Pseudopodia
(c) Stomata
(d) None of these
Ans: (b)
In amoeba, ingestion of food takes place with the help of pseudopodia

Q22. The undigested food is eliminated through:
(a) Anus
(b) Caecum
(c) Rectum
(d) None of these
Ans: (a)
The undigested food is eliminated through anus.

Q23. Villi are present in the inner walls of:
(a) Stomach
(b) Small intestine
(c) Large intestine
(d) None of these
Ans: (b)
Villi are present in the inner walls of small intestine.

Q24. Grass eating animals quickly swallow the grass and store it in a part of stomach called:
(a) Gall bladder
(b) Rumen
(c) Lower stomach
(d) None of these
Ans: (b)
Grass eating animals quickly swallow the grass and store it in a part of stomach called rumen.

Q25. Grass is rich in:
(a) Proteins
(b) Starch
(c) Cellulose
(d) None of these
Ans: (c)
Grass is rich in cellulose.

Q26. In amoeba, the food particles are trapped in:
(a) Pseudopodia
(b) Food vacuole
(c) Stomach
(d) None of these
Ans: (b)
In amoeba, the food particles are trapped in food vacuole.

Q27. The gland located just below the stomach is:
(a) Liver
(b) Pancreas
(c) Gall bladder
(d) None of these
Ans: (b)
Pancreas is the gland located just below the stomach.

Q28. Number of canines present in an adult are:
(a) 4
(b) 6
(c) 8
(d) 16
Ans: (a)
Number of canines present in an adult are 4.

Q29. The teeth which helps in biting the food are the:
(a) Canines
(b) Incisors
(c) Premolar
(d) Molars
Ans: (b)
The teeth which helps in biting in food are the incisors.