In double fertilization, one sperm produces a diploid and the other produces a triploid a. zygot

step 1 What happens in double fertilisation? So there are two functional sperm, and one produces a dipl

In double fertilization, one sperm produces a diploid and...

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Key Concepts

Primary Endosperm

The primary endosperm is the tissue that results from the fusion of a sperm cell with the two polar nuclei within the central cell during double fertilization. With a triploid set of chromosomes, it functions as a source of nutrients for the developing embryo.

Double Fertilization

Double fertilization is a unique reproductive process in flowering plants where two separate fusion events take place: one sperm cell fuses with the egg cell to form a diploid zygote, and a second sperm cell fuses with the two polar nuclei to create a triploid endosperm. This mechanism ensures both the formation of the embryo and the development of nutritive tissue to support it.

Zygote

The zygote is the cell formed by the fusion of the egg cell and a sperm cell during fertilization. Being diploid, it contains two sets of chromosomes—one contributed by each parent—and develops into the embryo of the plant.

Ploidy

Ploidy refers to the number of complete sets of chromosomes in a cell. In the context of double fertilization, the zygote is diploid (two sets), while the primary endosperm is triploid (three sets), highlighting the different chromosomal compositions that occur during the fertilization events.

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