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 Multiple Choice QuestionsMultiple Choice Questions


Which of the following structure in Pheretima posthuma plays the role of the liver of vertebrates ?

  • Calciferous glands

  • Gland cells

  • Chloragogen cells

  • Cliteller cells


The ganglia of sympathetic and the central nervous system in frog develops from the

  • neural cell

  • neural plate cells

  • notochordal cells

  • neural crest cells


Striped muscles are

  • anucleate

  • binucleate

  • uninucleate

  • syncytial


A frog has its brain crushed. But when pinched on the leg, The leg draws away. It is an example of

  • neurotransmitter incluced response

  • simple reflex

  • conditioned reflex

  • automated motor response


Assertion : Leaf butterfly and stick insect show mimicry to dodge their enemies.

Reason : Mimicry is a method to acquire body colour blending with the surroundings.

  • If both Assertion and Reason are true and the reason is the correct explanation of the assertion

  • If both Assertion and Reason are true but the reason is not the correct explanation of the assertion

  • If Assertion is true statement but Reason is false

  • If both Assertion and Reason are false statements


Tadpoles can be made to grow in size and become adult by

  • injecting thyroxine hormone

  • feeding the eggs of other frogs

  • injecting gonadotrophic hormones

  • providing them with suitable climatic conditions



The peculiar pungent smell of cockroach is produced by the secretions of :

  • pheromones

  • flame cells

  • abdominal glands

  • cervical glands



Pheromones are the secretion of small amount of chemical substances leading to specific physiological or behavioural responses in other members of the same species. They are mainly used to induce mating. 


Non-cellular layer that connects inner surface of the epithelial tissue to the connective tissue is

  • basement membrane

  • epidermis

  • dermis

  • either (b) or (c).


Excretion in cockroach takes place by

  • nephridium

  • parotid gland

  • coxal glands

  • malpighian tubules


The parasphenoid bone in frog forms :

  • base of cranium

  • floor of cranium

  • dorsal side of cranium

  • dorsolateral side of cranium