Question

Assertion (A): Endosperm development precedes embryo development.
Reason(R): During the endosperm development, initially the PEN undergoes successive nuclear divisions to give rise to free nuclei.

• A. Both assertion and reason are true and reason is the correct explanation of assertion.
• B. Both assertion and reason are true but reason is not the correct explanation of assertion.
• C. The assertion is true but reason is false.
• D. Both assertion and reason are false.

Answer 1

The correct option is B Both assertion and reason are true but reason is not the correct explanation of assertion.

Endosperm development precedes embryo development because endosperm is the tissue which has food reserves and it provides nutrition to the developing embryo.

In the most common type of endosperm development, the primary endosperm nucleus (PEN) successively divides to give rise to free nuclei. This is called the free-nuclear endosperm stage of endosperm development. This is followed by cell wall formation due to which endosperm becomes cellular.

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