CBSE Class 7 Science – MCQ and Online Tests – Unit 2 – Nutrition in Animals
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CBSE Class 7 Science – MCQ and Online Tests – Unit 2 – Nutrition in Animals
Choose the correct answer:
Question 1.
Given below from (i) to (iv) are some food items.
(i) Boiled and mashed potato
(ii) Glucose solution
(iii) A slice of bread
(iv) Mustard oil
Which of the above will give blue-black colour when tested with iodine?
(a) (i) and (ii)
(b) (i) and (iii)
(c) (ii) and (iii)
(d) (iii) and (iv)
Answer
Answer: (b) (i) and (iii)
Question 2.
The false feet of Amoeba are used for:
(a) movement only
(b) capture of food only
(c) capture of food and movement
(d) exchange of gases only
Answer
Answer: (c) capture of food and movement
Question 3.
Read the following statements with reference to the villi of small intestine.
(i) They have very thin walls.
(ii) They have a network of thin and small blood vessels close to the surface.
(iii) They have small pores through which food can easily pass.
(iv) They are finger-like projections.
Identify those statements which enable the villi to absorb digested food.
(a) (i), (ii) and (iv)
(b) (ii), (iii) and (iv)
(c) (iii) and (iv)
(d) (i) and (iv)
Answer
Answer: (a) (i), (ii) and (iv)
Question 4.
Bile is produced in
(a) Gall bladder
(b) Blood
(c) Liver
(d) Spleen
Answer
Answer: (c) Liver
Question 5.
The finger-like outgrowths of Amoeba helps to ingest food. However, the finger-like outgrowths of human intestine helps to:
(a) digest the fatty food substances
(b) make the food soluble
(c) absorb the digested food
(d) absorb the undigested food
Answer
Answer: (c) absorb the digested food
Question 6.
The main function of the lacteals of intestine is the absorption of
(a) amino acids
(b) glucose and vitamins
(c) lactic acid
(d) fatty acids and glycerol
Answer
Answer: (d) fatty acids and glycerol
Question 7.
Gastric digestion takes place efficiently in
(a) acidic medium
(b) alkaline medium
(c) neutral medium
(d) highly alkaline medium
Answer
Answer: (a) acidic medium
Question 8.
Which is not digested by human?
(a) Protein
(b) Fats
(c) Glucose
(d) Cellulose
Answer
Answer: (d) Cellulose
Question 9.
How many premolars teeth found in mouth?
(a) 2
(b) 4
(c) 6
(d) 8
Answer
Answer: (b) 4
Question 10.
The acid present in the stomach:
(a) kills the harmful bacterial that may enter along with the food.
(b) protects the stomach lining from harmful substances.
(c) digests starch into simpler sugars.
(d) makes the medium alkaline.
Answer
Answer: (c) digests starch into simpler sugars.
Question 11.
The enzymes predsent in the saliva convert:
(a) fats into fatty acids and glycerol
(b) starch into simple sugars
(c) proteins into amino acids
(d) complex sugars into simple sugars
Answer
Answer: (b) starch into simple sugars
Question 12.
Which of the following pair of teeth differ in structure but are similar in function?
(a) canines and incisors
(b) molars and premolars
(c) incisors and molars
(d) premolars and canines
Answer
Answer: (a) canines and incisors
Question 13.
Read carefully the terms given below. Which of the following set is the correct combination of organs that do not carry out any digestive functions?
(a) Oesophagus, Large Intestine, Rectum
(b) Buccal Cavity, Oesophagus, Rectum
(c) Buccal Cavity, Oesophagus, Large Intestine
(d) Small Intestine, Large Intestine, Rectum
Answer
Answer: (a) Oesophagus, Large Intestine, Rectum
Question 14.
The swallowed food moves downwards in the alimentary canal because of:
(a) force provided by the muscular tongue.
(b) the flow of water taken with the food.
(c) gravitational pull.
(d) the contraction of muscles in the wall of food pipe.
Answer
Answer: (a) force provided by the muscular tongue.
Question 15.
Cud is the name given to the food of ruminants which is:
(?) swallowed and undigested.
(b) swallowed and partially digested.
(c) properly chewed and partially digested.
(d) properly chewed and completely digested.
Answer
Answer: (b) swallowed and partially digested.
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