Question

What is made when a sperm cell combines with the polar nuclei?

Answer 1

endosperm

Step-by-step explanation:

The second fertilization results in the endosperm, which is a special tissue used to nourish the embryo.

Answer 2

Explanation:Two of the nuclei (the polar nuclei) move to the center of the embryo sac and fuse together, forming a single, diploid central cell. This central cell later fuses with a sperm to form the triploid endosperm, which will ultimately provide nourishment for the developing embryo (analogous to yolk in animal eggs).