Question

Assertion: In angiosperms, each of the cells of an embryo-sac is haploid.
Reason: Embryo sac formation is preceded by meiosis.

• A. Both A and R are correct and R is the correct explanation of A.
• B. Both A and R are correct and R is not the correct explanation of A.
• C. A is correct but R is incorrect.
• D. Both A and R are incorrect

Answer 1

The correct option is A Both A and R are correct and R is the correct explanation of A.

In angiosperms, during the process of megasporogenesis, the diploid megaspore divides by meiosis to form four haploid megaspores. Out of these, three normally degenerate and only one megaspore remains.

This functional megaspore will undergo repeated mitosis to give rise to a 7 celled 8 nucleated embryosac. This is the female gametophyte in angiosperms as it contains the single egg cell.