Development of Male and Female Gametophytes

Development of Male Gametophyte

Micro-gametogenesis: Formation of male gametophyte

It is the formation of the pollen particle, a two-celled stage, within an anther.

Anther Structure and Development

• A juvenile anther contains homogenous meristematic cells surrounded by a well-developed epidermis. As an anther continues to develop, it becomes slightly four-lobed.
• Some hypodermal cells that are notably la…

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Polyembryony: Polyembryony in Different Groups

Polyembryony refers to the development of multiple embryos within a single ovule, germ, or fertilized ovum. It is found in both animals and vegetation. Up to 2,000 embryos can develop from a single zygote in certain animals (e. g. , parasitic Hymenoptera), which are the most conspicuous examples of polyembryony. This phenomenon was first observed in orange kernels by Antonie van Leeuwenhoek in 1719. Polyembryony is so prevalent in a number of g…

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