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

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Appeared in Year: 2014

Essay Question▾

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 ce

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Question number: 2

» Angiosperms » Development of Male and Female Gametophytes

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Appeared in Year: 2014

Essay Question▾

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 dev

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