Question

Discuss the development of ployembryony in Pinus with the help of neat labelled sketches?​

Answer 1

Answer:

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Explanation:

The phenomenon of the development of more than one embryo in one ovule, seed or fertilized ovum is called polyembryony. It occurs in both animals as well as plants. Most striking cases of polyembryony are seen in certain animals {e.g. parasitic Hymenoptera), where up to 2,000 embryos may spring from one zygote.

In plants, this phenomenon was first reported by Antoni van Leeuwenhoek (1719) in orange seeds. In several gymnosperms, the polyembryony is so common that it might be regarded as an important character of this group.