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 Multiple Choice QuestionsMultiple Choice Questions

1.

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

  • neural cell

  • neural plate cells

  • notochordal cells

  • neural crest cells


2.

Striped muscles are

  • anucleate

  • binucleate

  • uninucleate

  • syncytial


3.

The parasphenoid bone in frog forms :

  • base of cranium

  • floor of cranium

  • dorsal side of cranium

  • dorsolateral side of cranium


4.

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


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5.

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

  • pheromones

  • flame cells

  • abdominal glands

  • cervical glands


6.

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

  • basement membrane

  • epidermis

  • dermis

  • either (b) or (c).


7.

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


8.

Excretion in cockroach takes place by

  • nephridium

  • parotid gland

  • coxal glands

  • malpighian tubules


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9.

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


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10.

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

  • Calciferous glands

  • Gland cells

  • Chloragogen cells

  • Cliteller cells


C.

Chloragogen cells

Chloragogen cells of Pheretima posthuma are analogous to liver of vertebrates. They are said to be excretory. They may also store the reserve food material and manufacture glycogen from fatty acids.


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