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.
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Embryogenesis in angiosperms involves distinct stages, including the globular, heart-shaped, and torpedo stages, leading to the formation of a mature embryo.
Both Assertion (A) and Reason (R) are true, and Reason (R) is the correct explanation of Assertion (A).
: Both Assertion (A) and Reason (R) are true, but Reason (R) is not the correct explanation of Assertion (A).
Assertion (A) is true, but Reason (R) is false.
Assertion (A) is false, but Reason (R) is true.
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The Correct Option isC
Solution and Explanation
- The zygote develops into a heart-shaped embryo, which then progresses to the proembryo stage in angiosperms. - The zygote resides at the micropylar end of the embryo sac, enabling nutrient uptake crucial for its growth. - The micropylar position (R) does not cause the formation of the heart-shaped embryo stage (A). This stage is a product of differentiation during embryogenesis.