In flowering plants,an event known as double fertilization occurs when _____.
A)two sperm enter the ovule;one fertilizes the egg,and the other fertilizes a 2n cell to generate endosperm
B)two sperm cells fertilize one normal egg cell to make a 3n embryo,and the embryo later becomes 2n during a unique mitotic division
C)two eggs are simultaneously fertilized by two sperm nuclei
D)None of the above apply.

Question

Quizplus · Accepted Answer

Double fertilization is an event in flowering plants where two sperm cells enter the ovule. One sperm fertilizes the egg cell, forming the zygote, while the other sperm fertilizes a 2n cell known as the central cell or the primary endosperm cell. This fusion results in the formation of a 3n endosperm that acts as a nutrient source for the developing embryo. This unique process is essential for the successful reproduction of flowering plants. Option B and C are incorrect as they do not accurately describe double fertilization in flowering plants.

In Flowering Plants,an Event Known as Double Fertilization Occurs When