AIIMS2018Zoology-Reproduction in Organisms

AIIMS 2018 Zoology Embryogenesis Assertion Reason Question

Type: Assertion Reason-conceptual-Easy-Class 12

Assertion: The development of embryo from the zygote is called embryogenesis. Reason: Cell divisions increase the number of cells in the developing embryo.

A

If both assertion and reason are true and reason is the correct explanation of assertion.

B

If both assertion and reason are true but reason is not the correct explanation of assertion.

C

If assertion is true but reason is false.

D

If both assertion and reason are false.

Correct Answer

Option B

Detailed Explanation

Option B is correct because both the assertion and reason are true: embryogenesis is indeed the process of developing an embryo from a zygote, and cell divisions (mitosis) do increase the number of cells in the developing embryo. However, the reason does not directly explain the assertion, as embryogenesis encompasses more than just cell division; it also involves differentiation and morphogenesis. Option A is incorrect because, while both statements are true, the reason does not adequately explain the assertion. Options C and D are incorrect because they misrepresent the truth of the assertion and reason.

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