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What is the name of the structure where the development of male gametophytes in pollen grains takes place?
What is the name of the structure where the development of male gametophytes in pollen grains takes place?
Anthers
What is the ploidy of microspore mother cells?
What is the ploidy of microspore mother cells?
Diploid
What process do microspore mother cells undergo to produce microspores?
What process do microspore mother cells undergo to produce microspores?
Meiosis
What is the ploidy of microspores?
What is the ploidy of microspores?
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What process does a microspore undergo to form a male gametophyte?
What process does a microspore undergo to form a male gametophyte?
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How many cells does a mature male gametophyte consist of?
How many cells does a mature male gametophyte consist of?
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What are the two cells that make up a mature male gametophyte?
What are the two cells that make up a mature male gametophyte?
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What forms a pollen grain?
What forms a pollen grain?
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The spore wall of a pollen grain is always smooth and featureless.
The spore wall of a pollen grain is always smooth and featureless.
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Study Notes
Male Gametophyte Development in Pollen Grains
- Pollen grains develop in anthers
- Each anther contains 4 microsporangia
- Microsporocytes (diploid cells) are within microsporangia
- Microsporocytes undergo meiosis, producing 4 haploid microspores
- Each microspore divides by mitosis to form a haploid male gametophyte
- The male gametophyte consists of 2 cells: a generative cell and a tube cell
- The spore wall is produced by both the microsporangia and the anther
- The spore wall often has a unique, species-specific pattern
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Description
This quiz covers the intricate process of male gametophyte development in pollen grains. Explore the stages from microsporogenesis to the formation of the haploid male gametophyte consisting of two distinct cells. Understand the significance of the spore wall's unique patterns across different species.
