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Infographics: Reproduction in Plants | Science Class 7 (Old NCERT)

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FAQs on Infographics: Reproduction in Plants - Science Class 7 (Old NCERT)

1. What are the main methods of reproduction in plants?
Ans. The main methods of reproduction in plants are sexual and asexual reproduction. Sexual reproduction involves the fusion of male and female gametes, resulting in the formation of seeds. Asexual reproduction does not involve gametes; instead, it includes methods such as vegetative propagation, where new plants grow from parts of the parent plant, like roots, stems, or leaves.
2. What role do flowers play in plant reproduction?
Ans. Flowers are the reproductive structures of flowering plants (angiosperms). They produce male (pollen) and female (ovules) gametes. The process of pollination occurs when pollen from the male part (anther) reaches the female part (stigma), leading to fertilization and the eventual formation of seeds and fruits.
3. How does pollination occur in plants?
Ans. Pollination can occur through various agents such as wind, water, insects, birds, and animals. Insects and birds are particularly important for many flowering plants, as they transfer pollen while feeding on nectar. Wind-pollinated plants release large amounts of pollen, which can travel long distances to reach other plants.
4. What is the difference between self-pollination and cross-pollination?
Ans. Self-pollination occurs when pollen from the same plant fertilizes its own ovules, leading to offspring that are genetically similar to the parent. Cross-pollination, on the other hand, involves the transfer of pollen from one plant to another, resulting in greater genetic diversity among the offspring, which can enhance adaptability and survival.
5. What are some examples of asexual reproduction in plants?
Ans. Examples of asexual reproduction in plants include vegetative propagation through runners (like strawberries), tubers (like potatoes), bulbs (like onions), and cuttings (like succulents). Each of these methods allows plants to produce new individuals without the need for seeds or fertilization.
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