Question

explain double fertilization. The correct answer will be marked as brainliest
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Answer 1

Double fertilization is a complex fertilization mechanism of flowering plants (angiosperms). This process involves the joining of a female gametophyte(megagametophyte, also called the embryo sac) with two male gametes(sperm). It begins when a pollen grain adheres to the stigma of the carpel, the female reproductive structure of a flower. The pollen grain then takes in moisture and begins to germinate, forming a pollen tube that extends down toward the ovary through the style. The tip of the pollen tube then enters the ovary and penetrates through the micropyle opening in the ovule. The pollen tube proceeds to release the two sperm in the megagametophyte.

Answer 2

$\huge\mathfrak\red{Answer :}$


$\underline{\underline{\huge{\textbf{Double Fertilization :}}}}$


After pollination when pollen grains reach the stigma then stigma secret some liquid substance.... Pollen grains absorb that liquid substance and germinate to form pollen tube.. This pollen tube grows longer and longer and ultimately reach the ovule. 

Now each pollen grain release two male gamates in the pollen tube. These male gamates travel through the pollen tube and reach the ovule.

When one male gamate fuse with egg then this process is known as Fertilization. And this type of process in plants is known as Syngamy...

When the male gamate fuse with two daughter nuclei then it is known as Triple fusion..

Since the fertilization occurs two times in plants. So, it is known as Double Fertilization in Plants.

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