What is meant by double fertilization? Select all that apply. A diploid zygote is formed. Two diploid zygotes form. Endosperm will form. Plants aren't real.

A diploid zygote is formed; Endosperm will form.

Explanation:

The fertilization in angiosperms (flowering plants) is known as double fertilization. In this process, two male gametes or sperms are involved where one sperm fertilizes the ovum or egg cell and forms a diploid zygote that develops into an embryo while the other sperm fertilizes two polar nuclei and forms a triploid cell that develops into the endosperm.

The female reproductive structure of a flower includes stigma, style, and ovary. During pollination, the pollen grain attaches to the stigma where it begins to germinate and forms a pollen tube that grows into the style and reaches the ovary. It enters the ovary and penetrates an opening in the ovule called the micropyle. The generative cell in the pollen grain travels through the pollen tube and divides to form two sperms that enter into the ovule.

Usually, six cells (three antipodal cells, two synergid cells, and one egg cell) and two polar central nuclei are present in an unfertilized ovule. Here, a  process known as syngamy occurs, where one haploid sperm fertilizes the haploid egg cell or ovum and forms a diploid zygote. It later grows into an embryo. The other haploid sperm fuses with the two haploid polar nuclei to form a triploid nucleus that develops into the endosperm (nutrient-rich tissue) which provides nourishment to the growing embryo. Later, the fertilized ovule forms the seed and the ovary develops into the fruit which envelops and protects the seed.

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explanation:

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