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 Multiple Choice QuestionsMultiple Choice Questions


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

  • neural cell

  • neural plate cells

  • notochordal cells

  • neural crest cells


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


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

  • Calciferous glands

  • Gland cells

  • Chloragogen cells

  • Cliteller cells



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


simple reflex

Simple reflex action is a nerve mediated spontaneous automatic and involuntary response to a stimulus acting on a specific receptor without consulting the will of the animal.

Conditioned reflexes are those reflex actions that are not present at birth but develop later in life through learning, habit, experience or regular association of an indifferent stimulus with unconditioned stimulus.


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

  • basement membrane

  • epidermis

  • dermis

  • either (b) or (c).


Striped muscles are

  • anucleate

  • binucleate

  • uninucleate

  • syncytial


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

  • pheromones

  • flame cells

  • abdominal glands

  • cervical glands


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 parasphenoid bone in frog forms :

  • base of cranium

  • floor of cranium

  • dorsal side of cranium

  • dorsolateral side of cranium


Excretion in cockroach takes place by

  • nephridium

  • parotid gland

  • coxal glands

  • malpighian tubules