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Pre-fertilisation Events Video Lecture - NEET
FAQs on Pre-fertilisation Events Video Lecture - NEET
| 1. What are the pre-fertilisation events in plants? |  |
Ans. Pre-fertilisation events in plants refer to the series of processes that occur before fertilization takes place. These events include pollination, pollination tube formation, pollen germination, and pollen tube growth towards the female gametophyte.
| 2. What is the role of pollination in pre-fertilisation events? | |
Ans. Pollination is a crucial step in pre-fertilisation events as it involves the transfer of pollen grains from the anther to the stigma of the flower. This enables the pollen grains to reach the female reproductive structures and initiate the fertilization process.
| 3. How does pollen germination occur during pre-fertilisation events? | |
Ans. Pollen germination occurs during pre-fertilisation events when a pollen grain lands on the stigma. It absorbs moisture from the stigma, which triggers the growth of a pollen tube. This tube then grows down through the style towards the ovary, carrying the male gametes to the ovules.
| 4. What is the significance of pollen tube growth in pre-fertilisation events? | |
Ans. Pollen tube growth is significant in pre-fertilisation events because it allows the male gametes to reach the female gametophyte inside the ovule. The pollen tube serves as a conduit for the delivery of male gametes, ensuring successful fertilization and subsequent seed formation.
| 5. What factors can affect pre-fertilisation events in plants? | |
Ans. Several factors can affect pre-fertilisation events in plants, including the availability of pollinators for pollination, environmental conditions such as temperature and humidity, genetic compatibility between the pollen and stigma, and the presence of any barriers that may prevent successful pollen tube growth.
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Nov 15, 2024 Last updated |
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