Class 12 Exam > Class 12 Questions > In Capsella pollen grains are shed ata)One ce...
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In Capsella pollen grains are shed at
- a)One celled stage
- b)Three cell stage
- c)Three nuclei stage
- d)Two celled stage
Correct answer is option 'D'. Can you explain this answer?
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In Capsella pollen grains are shed ata)One celled stageb)Three cell st...
Capsella is a genus belonging to the family brassicaceae. The pollen grain of capsella is shed at 2 celled stage.
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In Capsella pollen grains are shed ata)One celled stageb)Three cell st...
Answer:
The correct answer is D: Two-celled stage.
In Capsella (a genus of flowering plants), pollen grains are shed at the two-celled stage. Here's a detailed explanation:
Therefore, in Capsella, the pollen grains are shed at the two-celled stage.
The correct answer is D: Two-celled stage.
In Capsella (a genus of flowering plants), pollen grains are shed at the two-celled stage. Here's a detailed explanation:
- Pollen grains: Pollen grains are the male reproductive structures of plants.
- Development stages: The development of a pollen grain involves several stages, starting from the microspore stage within the anther of the flower.
- Two-celled stage: At the two-celled stage, the pollen grain consists of two cells - a vegetative cell and a generative cell.
- Vegetative cell: The vegetative cell is responsible for providing nutrients and support to the developing pollen tube.
- Generative cell: The generative cell is the precursor to sperm cells. It undergoes division to form two sperm cells that are involved in fertilization.
- Pollen shedding: Once the pollen grain reaches the two-celled stage, it is mature enough to be shed from the anther and carried by wind, insects, or other means to the stigma of a receptive flower for pollination.
Therefore, in Capsella, the pollen grains are shed at the two-celled stage.
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In Capsella pollen grains are shed ata)One celled stageb)Three cell stagec)Three nuclei staged)Two celled stageCorrect answer is option 'D'. Can you explain this answer?
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