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)


2. 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


3. Read carefully the terms given below. Which of the following set is the correct combination of organ?

a) Oesophagus, Large Intestine, Rectum

b) Buccal cavity, Oesophagus, Rectum

c) Buccal cavity, Oesophagus, Large Intestine

d) Small Intestine, Large Intestine, Rectum


4. 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


5. The acid present in the stomach

a) kills the harmful bacteria that may enter along with the food

b) protects the stomach lining from harmful substances

c) digests starch into simple sugars

d) makes the medium alkaline


6. 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


7. 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)


8. 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


9. The enzymes present 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


10. Cud is the name given to the food of ruminants which is

a) swallowed and undigested

b) swallowed and partially digested

c) properly chewed and partially digested

d) properly chewed and completely digested


11. Choose the correct order of terms that describes the process of nutrition in ruminant. a) swallowing-->partial digestion --> chewing of cud -->complete digestion

b) chewing of cud --> swallowing -->partial digestion-->complete digestion

c) chewing of cud --> swallowing -->mixing with digestive juices-->digestion

d) swallowing -->chewing of cud --> partial digestion-->complete digestion


12. Cellulose-rich food substances are good source of roughage in human beings because

a) Human beings do not have cellulose-digesting enzymes

b) Cellulose gets absorbed n the human blood and converts into fibres

c) The cellulose-digesting bacteria converts cellulose into fibres

d) Cellulose breaks down into smaller components which are egested as roughage


13. Name the part of the alimentary canal where, Water gets absorbed from undigested food

a) Small Intestine

b) Stomach

c) Rectum

d) Large intestine


14. Name the part of the alimentary canal where, Digested food gets absorbed

a) Small Intestine

b) Stomach

c) Rectum

d) Large intestine


15. Name of the part where, Bile juice is Secreted

a) Liver

b) Salivary gland
c) Stomach

d) Pancreas


16. Widest part of the alimentary canal is

a) stomach

b) large intestine

c) small intestine

d) none of these


17. Choose the odd one out from the following and give reason

a) liver

b) salivary gland

c) starch

d) gall bladder


18. Choose the odd one out from the following and give reason

a) stomach

b) liver

c) pancreas

d) salivary gland


19. Choose the odd one out from the following and give reason

a) tongue,
b) absorption

c) taste

d) swallow


20. Choose the odd one our from the following and give reason

a) oesophagus,
b) small intestine

c) large intestine

d) rectum​