Question

If a chromosome number of a plant species is 16 what would be the chromosome number and ploidy of the 

(a) microspore mother cell and the 

(b) endosperm cells ? 

Answer 1

(a) Microspore mother cell   →16, which is a diploid (2n) number.

(b) Endosperm  → 24 -- Because it is a triploid (3n) structure, formed as a result of triple fusion i.e, the fusion of one male gamete with two haploids (n) polar nuclei or with a diploid secondary nucleus.