How do plants develop after fertilization?

The fertilization process is double fertilization.

(1) Changes of reproductive organs in angiosperms after double fertilization;

Perianth and stamens wither first.

Stigma and stigma will wither.

Ovary continues to develop (ovule → fruit fertilization polar nucleus → endosperm)

① Embryo development: The development process of embryos in different plants is basically the same.

& lt 1 & gt； Globular embryoids: Mitotic formation

& lt2> suspensor: The basal cells line up to form an eight-cell suspensor.

Support embryo, supply nutrition, promote embryo development, and be absorbed by embryo in the later stage.

② Endosperm development:

& lt 1 & gt； Dicotyledonous plants: During the development of embryo and endosperm, endosperm is gradually absorbed by embryo, and nutrients are stored in cotyledons, forming seeds without endosperm, often with two cotyledons.

Such as: soybeans, peanuts, cucumbers, etc.

& lt2> Monocotyledon: If the embryo is not absorbed, the seed has endosperm.

There are usually cotyledons.

Such as wheat, corn and rice.

③ During the development of embryo and endosperm:

Perianth seed coat

Under suitable environmental conditions, ovule seeds germinate and grow into seedlings.

Ovary fruit falls off from the mother when it matures.