Angiosperms-Development of Male and Female Gametophytes (IFS (Forests Services) Botany (Mains)): Questions 1 - 2 of 2
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Question number: 1
» Angiosperms » Development of Male and Female Gametophytes
Appeared in Year: 2014
Describe in Detail
Stages depicting the formation of vegetative and generative cells during male gametophyte development in angiosperms (Paper - 1, Section - B)
Explanation
Development of male gametophyte starts in pollen grains.
Microspore undergoes mitotic divisions and forms two unequal cells; vegetative cell and generative cell.
The larger cell is called vegetative cell and the smaller cell is called generative cell or germinative cell.
Vegetative cell is also called as tube cell.
Vegetative cell is large and has abun
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Question number: 2
» Angiosperms » Development of Male and Female Gametophytes
Appeared in Year: 2014
Describe in Detail
Differentiate between Megasporogenesis and megagametogenesis. (Paper - 1, Section - B)
Explanation
Megasporogenesis:
The formation and development of megaspores is called Megasporogenesis.
The formation of megaspores occurs inside the ovules of seed plants. A diploid cell in the ovule is called megaspore mother cell which is undergoes to the meiosis and form four haploid megaspores.
In most plants, out of four only one megaspore develops into a meg
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