Solved Zoology objective MCQ Questions

Solved Zoology objective MCQ Questions
Solved Multiple Choice Questions in Zoology Practice test

1. The source of Oxygen liberated in photosynthesis is
(a) photosynthetic enzyme
(b) carbohydrate present in leaf
(c) water
(d) carbon dioxide
Ans. (c)




2. Which of the following is the least effective in photosynthesis?
(a) Red light
(b), Blue light
(c) Green light
(d) Violet
Ans. (c)


3. Dark reaction in photosynthesis is called so because
(a) it does not require light energy
(b) cannot occur during daytime
(c) occurs more rapidly at night
(d) it can also occur in darkness
Ans. (a)


4. Which one of the following would not limit photosynthesis?
(a) Oxygen
(b) Carbon dioxide
(c) Light
(d) Chlorophyll
Ans. (a)


5. Which would do maximum harm to a tree?
(a) The loss of all of its leaves
(b) The loss of half of its branches
(c) The loss of its bark
(d) The loss of half of its leaves
Ans. (a)


6. Phloem always flows from a
(a) sugar source to sugar sink
(b) sugar sink to sugar source
(c) leaf to the xylem to the phloem
(d) leaf to a root
Ans. (a)



7. Digestion within a digestive tract is
(a) incomplete
(b) extracellular
(c) the same as absorption
(d) an irreversible process
Ans. (b)


8. Muscular contractions of alimentary canal are
(a) circulation
(b) deglutition
(c) peristalsis
(d) churning
Ans. (c)


9. Which of the following animals has no need for a gall bladder?
(a) Horse
(b) Lion
(c) Dog
(d) Human
Ans. (a)


10. Bulk of the tooth in mammals is made up of
(a) dentine
(b) enamel
(c) pulp cavity
(d) root
Ans. (a)


11. Diastema is associated with
(a) presence of certain teeth
(b) absence of certain teeth
(c) absence of tongue
(d) presence of tongue
Ans. (b)


12. A dental disease characterised by mottling of teeth is due to the presence of an
ingredient in drinking water, namely
(a) fluorine
(c) boron
(b) mercury
(d) chlorine
Ans. (a)


13. A digestive enzyme, salivary amylase, in the saliva begin digestion of
(a) protein
(b) nucleic acids
(c) facts
(d) carbohydrates
Ans. (d)


14. In the presence of lactase, lactose breaks down into molecules of
(a) glucose and galactose
(b) glucose and fructose
(c) galactose only
(d) glucose only
Ans. (a)

15. Which of the following enzyme acts efficiently at pH two?
(a) Trypsin
(b) pepsin
(c) Ptyalin
(d) All of above
Ans. (b)


16. Which category of compound is most concentrated energy source?
(a) Lipid
(b) Carbohydrates
(c) Proteins
(d) Vitamins
Ans. (a)


17. If the stomach did not produce any hydrochloric acid, which enzyme will not
function?
(a) Ptyalin
(b) Trypsin
(c) Pepsin
(d) Collagenase
Ans. (c)


18. Brunner’s glands are present in the
(a) stomach
(b) liver
(c) small intestine
(d) large intestine
Ans. (c)



19. In a villus, some of the glycerol and fatty are combined to form fats, coated with
proteins, and then transported as chylomicrons to
(a) lacteal
(b) capillaries
(c) lumen of the small intestine
(d) lumen of the large intestine
Ans. (a)



20. Which of the following are produced from the pancreas?
(a) Three digestive enzymes and three hormones
(b) Two digestive enzymes and one hormone
(c) Three digestive enzymes and two hormones
(d) Three digestive enzyme and one hormone
Ans. (c)