Embryogenesis of flowering plants - is the development of the embryo in the seed. In the early stages, embryonic development of flowering plants tak

Embryogenesis in flowering plants [development]

Embryogenesis of flowering plants — is the development of the embryo in the seed.

In the early stages, embryonic development of flowering plants takes place identically in dicotyledons and monocotyledonous plants (Picture 86). The development process begins with the fact that the zygote, located in the ovule, stretches and divides across. One of the cells forms the so-called suspensor, and other forms of embryo. Suspensor for its functions resembles mammalian placenta. It performs a trophic function, providing a link of the embryo with endosperm. The second cell repeatedly divides by mitosis and eventually forms the embryo. It has already laid down the basic structure of the future plant, including: point of shoot growth; hypocotyl (from Greek “hypo” — bottom and “cotille” — cup) — the lower part of the embryo stem of the plant, which has signs of root; cotyledons; the embryonic root. All parts of embryo consist of cells that are able to divide. Embryo is at rest state until germination. In a humid environment begins the process of growth, at the same time occurs the development of plants and organs. Taken from http://worldofschool.org

Picture 86. Flowering plants with cotyledon leaves: the way from seed to the embryo
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Questions:
  • What embryonic organs form in plants’ embryo?