21) Plants receive their nutrients mainly from:
(A) Chlorophyll
(B) Atmosphere
(C) Light
(D) Soil
22) Potato is a modified form of:
(A) Root
(B) Stem
(C) Fruit
(D) Leaf
23) A plant cell is distinguished from an animal cell by the presence of:
(A) Nucleus
(B) Chloroplasts
(C) Cell membrane
(D) Cell wall
26) Duodenum is situated:
(A) At the uppermost part of the small intestine
(B) Near the lungs
(C) In the brain
(D) At the tail end of the intestine
27) Dialysis is used in the case of a patient suffering from:
(A) Heart problems
(B) Kidney problems
(C) Respiratory problems
(D) Neurological problems
28) Which gland of the human body produces insulin?
(A) Pituitary
(B) Thyroid
(C) Pancreas
(D) Spleen
29) In brain, the site for intelligence, memory and emotion is present in:
(A) Cerebrum
(B) Cerebellum
(C) Medulta
(D) Hypothalamus
30) Animal flesh is a good source of high quality proteins because animal proteins are:
(A) Directly taken up by muscle-tissues and add to their strength
(B) Animal proteins have all amino acids
(C) Animal proteins carry the right proportion of amino acids needed by humans
(D) Animal proteins are digested easily