Question

What will be the ploidy of endosperms, in angiosperms, if a tetraploid female plant is crossed with octaploid male?

• A. 3 x
• B. 6 x
• C. 5 x
• D. 8 x

Answer 1

The correct option is D 8 x

An octaploid male plant will have tetraploid (4x) male gamete. For a 4x female, haploid number is 2x. In it's embryo sac, the two polar nuclei (2x, 2x) will fuse with the male gamete (4n) and form an 8x endosperm

So, the correct answer is '8 x'