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Sexual Reproduction in Flowering Plants Video Lecture | Crash Course for NEET
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FAQs on Sexual Reproduction in Flowering Plants Video Lecture - Crash Course for NEET
| 1. What are the main steps involved in the sexual reproduction process of flowering plants? |  |
Ans.The main steps in sexual reproduction of flowering plants include pollination, fertilization, seed development, and seed dispersal. Pollination involves the transfer of pollen from the male anther to the female stigma. Once pollination occurs, fertilization takes place when the male gamete fuses with the female gamete, leading to the formation of a zygote. This zygote develops into a seed, which is eventually dispersed away from the parent plant.
| 2. What roles do the male and female reproductive structures play in flowering plants? | |
Ans.In flowering plants, the male reproductive structure is the stamen, which consists of the anther and filament. The anther produces pollen, which contains male gametes. The female reproductive structure is the pistil, made up of the stigma, style, and ovary. The stigma receives pollen, while the ovary contains ovules, which develop into seeds after fertilization. Together, these structures facilitate the process of reproduction.
| 3. How does pollination occur in flowering plants? | |
Ans.Pollination in flowering plants can occur through various agents such as wind, water, insects, birds, and animals. Insects like bees are the most common pollinators, as they are attracted to the flowers for nectar and inadvertently transfer pollen from one flower to another. Wind-pollinated plants release large quantities of lightweight pollen to increase the chances of successful pollination.
| 4. What is the significance of double fertilization in flowering plants? | |
Ans.Double fertilization is a unique process in flowering plants where one sperm cell fertilizes the egg cell to form a zygote, while another sperm cell fuses with two polar nuclei to form triploid tissue called endosperm. This endosperm nourishes the developing embryo within the seed. This process is significant because it ensures that the embryo has a food supply as it grows, increasing the chances of successful seed development.
| 5. What factors can affect the success of sexual reproduction in flowering plants? | |
Ans.Factors affecting the success of sexual reproduction in flowering plants include environmental conditions (such as temperature, humidity, and light), the availability of pollinators, genetic compatibility between plants, and the presence of diseases or pests. Adverse weather conditions can hinder pollination and fertilization, while a lack of pollinators can reduce the chances of successful reproduction.
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Nov 15, 2024 Last updated |
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