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NCERT Textbook: Sexual Reproduction in Flowering Plants | Biology Class 12 - NEET PDF Download

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FAQs on NCERT Textbook: Sexual Reproduction in Flowering Plants - Biology Class 12 - NEET

1. What is sexual reproduction in flowering plants?
Ans. Sexual reproduction in flowering plants is the process by which plants produce offspring through the fusion of male and female reproductive cells. It involves the formation of flowers, pollination, fertilization, and the development of seeds and fruits.
2. How do flowers play a role in sexual reproduction?
Ans. Flowers are the reproductive structures of flowering plants. They contain male and female reproductive organs, namely stamens and pistils. The stamens produce pollen grains which carry the male gametes, while the pistils contain the female gametes. Pollination occurs when pollen grains are transferred from the stamens to the pistils, allowing the fusion of male and female gametes.
3. What is the significance of pollination in sexual reproduction of flowering plants?
Ans. Pollination is a crucial step in the sexual reproduction of flowering plants. It enables the transfer of pollen grains from the anther (part of the stamen) to the stigma (part of the pistil). This transfer can occur through various agents like wind, water, insects, birds, or other animals. Pollination ensures the fertilization of the ovules in the ovary, leading to the formation of seeds and fruits.
4. How does fertilization occur in flowering plants?
Ans. Fertilization in flowering plants occurs after successful pollination. When a pollen grain lands on the stigma, it germinates and produces a pollen tube. The pollen tube grows down through the style and reaches the ovule in the ovary. The male gametes then move through the pollen tube and fuse with the female gametes inside the ovule, resulting in fertilization.
5. What is the role of seeds and fruits in the sexual reproduction of flowering plants?
Ans. After fertilization, the ovule develops into a seed, which contains the embryo of the new plant. The seed is protected by a seed coat and contains stored food for the developing embryo. Fruits, on the other hand, develop from the ovary and often serve as a means of dispersing seeds. They attract animals to consume them, and the seeds are later dispersed through the animal's digestive system or by attaching to their fur or feathers. This aids in the survival and dispersal of the offspring.
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