Podcast
Questions and Answers
What process results in the formation of microspores from pollen mother cells?
What process results in the formation of microspores from pollen mother cells?
- Mitosis
- Syngamy
- Gametogenesis
- Microsporogenesis (correct)
In what form are microspores arranged when initially formed?
In what form are microspores arranged when initially formed?
- Single cells
- Microspore tetrad (correct)
- Pollen grains
- Mature anther
What happens to microspores as anthers mature and dehydrate?
What happens to microspores as anthers mature and dehydrate?
- They fuse together
- They group into clusters
- They dissociate from each other (correct)
- They multiply in number
How many microspores or pollen grains can be formed inside each microsporangium?
How many microspores or pollen grains can be formed inside each microsporangium?
What is the name of the tissue capable of giving rise to microspore tetrads?
What is the name of the tissue capable of giving rise to microspore tetrads?
Where are microspores or pollen grains released during the process described?
Where are microspores or pollen grains released during the process described?
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.
