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Q.

Given below are two statements. One is labelled Assertion (A) and the other is labelled Reason (R). 

Assertion (A): The development of cockroach is paurometabolous.

Reason (R): In cockroach, the development takes place through nymphal stages.

In light of the above statements, choose the correct answer from the options given below. 

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a

Both (A) and (R) are true and (R) is the correct explanation of (A).

b

Both (A) and (R) are false.

c

(A) is true but (R) is false.

d

Both (A) and (R) are true but (R) is not the correct explanation of (A).

answer is A.

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Detailed Solution

Both (A) and (R) are true and (R) is the correct explanation of (A).

The development of cockroach is paurometabolous, because the development takes place through nymphal stages. Paurometaboly is a type of gradual metamorphosis. In paurometaboly, the immature stages (nymphs) resemble miniature versions of the adult form. As the nymphs moult and grow, they gradually develop adult features, such as wings and reproductive organs. This process occurs through a series of successive molts until the nymph reaches full adulthood.

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