Questions and Answers
What process results in the formation of microspores from pollen mother cells?
Microsporogenesis
In what form are microspores arranged when initially formed?
Microspore tetrad
What happens to microspores as anthers mature and dehydrate?
They dissociate from each other
How many microspores or pollen grains can be formed inside each microsporangium?
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What is the name of the tissue capable of giving rise to microspore tetrads?
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Where are microspores or pollen grains released during the process described?
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Study Notes
Microsporogenesis
- In anther development, cells of the sporogenous tissue undergo meiotic divisions to form microspore tetrads, which are haploid (n) cells.
- Each cell of the sporogenous tissue is capable of giving rise to a microspore tetrad, making them potential pollen or microspore mother cells.
- Microsporogenesis is the process of formation of microspores from a pollen mother cell (PMC) through meiosis.
- Microspores are formed in a cluster of four cells, known as a microspore tetrad.
- As anthers mature and dehydrate, microspores dissociate from each other and develop into pollen grains.
- Inside each microsporangium, several thousand microspores or pollen grains are formed, which are released with the dehiscence of the anther.
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Description
Learn about microsporogenesis and the ploidy of cells in microspore tetrads, including the role of microspore mother cells in plant reproduction. Study the structure of anthers and microsporangia with reference to Figure 1.3.
