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
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Development of male gametophyte starts in pollen grains.
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Microspore undergoes mitotic divisions and forms two unequal cells; vegetative cell and generative cell.
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The larger cell is called vegetative cell and the smaller cell is called generative cell or germinative cell.
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Vegetative cell is also called as tube cell.
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Vegetative cell… (322 more words) …
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:
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The formation and development of megaspores is called Megasporogenesis.
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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.
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In most plants, out of four only… (268 more words) …