Question

In a fertilized ovule of an angiosperm, the cells in which n, 2n, and 3n conditions respectively occur are:

• A. antipodal, zygote, and endosperm
• B. zygote, nucellus, and endosperm
• C. endosperm, nucellus, and zygote
• D. antipodals, synergids, and integuments

Hint:

The process of double fertilization in angiosperms ensures the formation of both a diploid zygote and a triploid endosperm for nourishment.

Answer 1

The Correct Option is A

Within a fertilized angiosperm ovule, ploidy levels are distributed as follows:
n (haploid): Present in antipodal cells. 
2n (diploid): Occurs in the zygote following fertilization. 
3n (triploid): Found in the endosperm, a product of double fertilization. This ploidy arrangement is definitive of angiosperm reproduction.