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Sexual Reproduction in Flowering Plants - 1 Video Lecture - NEET
FAQs on Sexual Reproduction in Flowering Plants - 1 Video Lecture - NEET
| 1. What is sexual reproduction in flowering plants? |  |
Ans. Sexual reproduction in flowering plants is the process by which new plants are produced through the fusion of male and female reproductive cells. It involves the transfer of pollen from the male reproductive organ (stamen) to the female reproductive organ (pistil) of a flower, leading to fertilization and the formation of seeds.
| 2. How do flowers facilitate sexual reproduction in plants? | |
Ans. Flowers play a crucial role in the sexual reproduction of flowering plants. They produce both male and female reproductive organs, i.e., stamen and pistil, respectively. The stamen produces pollen grains, which contain the male gametes, while the pistil contains the ovary, which houses the female gametes. Pollination occurs when pollen is transferred from the stamen to the pistil, allowing for fertilization and seed formation.
| 3. What is the significance of sexual reproduction in flowering plants? | |
Ans. Sexual reproduction in flowering plants brings about genetic diversity. Through the fusion of male and female reproductive cells, new combinations of genetic material are created, leading to offspring with unique traits. This genetic variation enhances the adaptability and survival of plant species in changing environments. Additionally, sexual reproduction allows for the exchange of beneficial traits and helps in the elimination of harmful mutations.
| 4. What are the different methods of pollination in flowering plants? | |
Ans. Pollination in flowering plants can occur through various methods. The two main types are:
- Self-pollination: In this method, pollen from the stamen is transferred to the pistil within the same flower or from one flower to another on the same plant. It ensures fertilization and seed formation without the need for external agents.
- Cross-pollination: This method involves the transfer of pollen from the stamen of one flower to the pistil of another flower on a different plant. It can be achieved through wind, water, insects, birds, or other animals. Cross-pollination promotes genetic diversity and outbreeding in plant populations.
| 5. How does fertilization occur in flowering plants? | |
Ans. Fertilization in flowering plants occurs when the male and female reproductive cells fuse. After pollination, the pollen grain lands on the stigma of the pistil. The pollen grain then germinates and forms a pollen tube that grows down through the style towards the ovary. Inside the ovary, the male gametes (sperm cells) are released from the pollen tube and fertilize the female gametes (egg cells) within the ovule. This fusion results in the formation of a zygote, which develops into an embryo and eventually a seed.
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Dec 21, 2024 Last updated |
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