Question

in haplopappus gracilis number of chromosomes in cells of nucellus is 4 .what will be the chromosome number in primary endosperm cell​

Answer 1

Answer:

Primary endosperm nucleus has 6 (3n=6) chromosome.

Answer 2

The primary endosperm cell has 6 chromosomes in nucleus.

Explanation:

In the Haplopappus Gracilis number of chromosomes in cells of nucleus is 4. The diploid tissue with 2n = 4 but the primary endosperm is a triploid condition so the cell will have $2 \times 3=6$ chromosomes.  

So primary endosperm cell has the 6 chromosomes in nucleus. Each haploid nucleus of embryo sac contains the 4 chromosomes.  

But if 2n=8 then the endosperm contains the 12 number of chromosomes.