NEETBotanySexual Reproduction in Flowering Plants
Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A): In the seeds of black pepper, the perisperm is a diploid tissue whereas the endosperm is a triploid tissue. Reason (R): Perisperm develops from the persistent remnants of the nucellus, while the endosperm develops from the primary endosperm nucleus. In the light of the above statements, choose the
Options
- ABoth (A) and (R) are correct but (R) is not the correct explanation of (A)
- BBoth (A) and (R) are correct and (R) is the correct explanation of (A)
- C(A) is correct but (R) is not correct
- D(A) is not correct but (R) is correct
Correct answer
B. Both (A) and (R) are correct and (R) is the correct explanation of (A)
Step-by-step solution
Assertion (A) is correct because in seeds like black pepper, the perisperm is a diploid (2n) tissue and the endosperm is a triploid (3n) tissue. Reason (R) is correct and provides the correct explanation for the Assertion. The ploidy of these tissues is a direct result of their developmental origin. The perisperm is the residual persistent nucellus, which is a maternal sporophytic tissue and is thus diploid (2n). The endosperm develops from the primary endosperm nucleus (PEN), which is formed by the process of trip