Question

Assertion (A): The zygote gives rise to heart-shaped embryo and subsequently proembryo in most angiosperms.
Reason (R): The zygote is present at the micropylar end of the embryo sac and develops into an embryo.

• A. Both Assertion (A) and Reason (R) are true, and Reason (R) is the correct explanation of Assertion (A).
• B. : Both Assertion (A) and Reason (R) are true, but Reason (R) is not the correct explanation of Assertion (A).
• C. Assertion (A) is true, but Reason (R) is false.
• D. Assertion (A) is false, but Reason (R) is true.

Hint:

Embryogenesis in angiosperms involves distinct stages, including the globular, heart-shaped, and torpedo stages, leading to the formation of a mature embryo.

Answer 1

The Correct Option is C

- The zygote does give rise to a heart-shaped embryo, which subsequently develops into the proembryo in angiosperms. - The micropylar end of the embryo sac is where the zygote is located, facilitating nutrient absorption necessary for its development. - However, the micropylar location (R) is not the reason for the formation of the heart-shaped embryo stage (A). Instead, the heart-shaped stage results from differentiation during embryogenesis.