Question

In an angiosperm a female plant having 2n = 24 is crossed with a male plant having 2n = 12. what will be the chromosome number of the endosperm

Answer 1

endosperm= 3n therefore 3n= 3 × 12= 36

Answer 2

Ans is 30

See the endosperm is made by the fusion of a male gamete with the polar nuclei. The polar nuclei would have 2n =24 from the female plant and n=6 from the male gamete making the chromosome no.=30

Hope it helps!