In a dithecous anther, each pollen sac contain 1000 MMC. What is the total number of pollen-grains produced by the anther ?
- 4000
- 8000
- 16 ,000
- 32000
The Correct Option is C
Solution and Explanation
Each pollen sac has 100 microspore mother cells.
So total microspore mother cell in 4 pollen sacs=4X100=400
Meiosis produces 4 pollen grains or male gametophytes.
Meiosis in 400 microspore mother cell will produce=400X4=1600 pollen grains or male gametophytes.
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Concepts Used:
Sexual Reproduction in Flowering Plants
Sexual reproduction in flowering plants takes place or happens when the production of a new organism occurs from two parents by making use of their gametes or sex cells. Both sexual and asexual reproduction can be found in plants. Nearly all flowering plants reproduce sexually. Flowers play a captious role in the process as it carries both the male and female reproductive parts commonly known as androecium and gynoecium respectively.
An individual flower comprises the following parts -
- Pedicle
- Calyx
- Petals
- Sepals
- Stamen
- Pistil
- Receptacle