Double fertilization means that
(a) one sperm is needed to fertilize the egg, and a second sperm is needed to fertilize the polar nuclei
(b) every egg must receive two sperm to produce an embryo
(c) flowers must be pollinated twice to yield fruits and seeds
(d) every sperm has two nuclei

Option (A).

Explanation:

Double fertilization is seen in the plants of the angiosperms. This process is also known as triple fusion. Two sperms are involved in the process of double fertilization.

The two sperm that enters through micropyle, one fuses with the egg cell is known as syngamy. The other sperm cells fuses with the two polar nuclei, this is known as double fertilization.

Thus, the correct answer is option (A).

answer: all : )

explanation:

1. b.

2. d.

3. a.

5. d.

6. c.

these are the only ones that i know, i hope this , and good luck.