In most flowering plants, one sperm nucleus fuses with an egg forming a zygote that develops into an embryo. Another sperm nucleus fuses with ____.
A)the endosperm mother cell to produce three cells, each with one nucleus
B)the endosperm mother cell, forming a diploid cell
C)the endosperm mother cell, forming a triploid (3n) cell
D)one of the smaller megaspores to produce what will eventually become the seed coat
E)one of the smaller megaspores to produce a diploid endosperm

Question

Quizplus · Accepted Answer

In most flowering plants, one sperm nucleus fuses with the egg to form a diploid zygote that develops into an embryo. The second sperm nucleus fuses with the central cell of the female gametophyte, which contains two nuclei, to form a triploid (3n) cell called the endosperm. This endosperm serves as a source of nutrition for the developing embryo in the seed. Therefore, the best choice is C – the endosperm mother cell, forming a triploid (3n) cell.

In Most Flowering Plants, One Sperm Nucleus Fuses with an Egg