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 Multiple Choice QuestionsMultiple Choice Questions


The parasphenoid bone in frog forms :

  • base of cranium

  • floor of cranium

  • dorsal side of cranium

  • dorsolateral side of cranium



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

  • neural cell

  • neural plate cells

  • notochordal cells

  • neural crest cells


neural crest cells

In frog, all nerve cells connecting to central nervous system (brain and spinal cord) with receptor and effectors constitute the peripheral nervous system. Some small masses of nerve cell bodies are called ganglia. They develop from neural crest cells in frog.


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


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

  • basement membrane

  • epidermis

  • dermis

  • either (b) or (c).


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

  • pheromones

  • flame cells

  • abdominal glands

  • cervical glands


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

  • Calciferous glands

  • Gland cells

  • Chloragogen cells

  • Cliteller 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


Excretion in cockroach takes place by

  • nephridium

  • parotid gland

  • coxal glands

  • malpighian tubules


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