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Sexual Reproduction in Flowering Plants Practice Questions - DPP for NEET

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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 structures. It involves the production of flowers, pollination, fertilization, and the formation of seeds.
2. What are the male and female reproductive structures in flowering plants?
Ans. In flowering plants, the male reproductive structure is called the stamen, which consists of anther and filament. The anther produces pollen grains, which contain the male gametes. The female reproductive structure is called the pistil or carpel, which consists of the stigma, style, and ovary. The stigma receives the pollen grains, and the ovary contains the ovules, which house the female gametes.
3. How does pollination occur in flowering plants?
Ans. Pollination in flowering plants occurs when pollen grains are transferred from the anther (male reproductive structure) to the stigma (female reproductive structure). It can happen through various agents like wind, water, or animals. Insects, birds, and bees are common pollinators as they inadvertently carry pollen from one flower to another while collecting nectar.
4. What is the process of fertilization in flowering plants?
Ans. Fertilization in flowering plants occurs when the male gametes from the pollen grains fuse with the female gametes present in the ovules. After pollination, the pollen tube grows from the pollen grain and reaches the ovary. The male gametes then travel through the pollen tube and fuse with the female gametes in the ovule, resulting in the formation of a zygote. The zygote develops into an embryo, and the ovule matures into a seed.
5. Why is sexual reproduction important in flowering plants?
Ans. Sexual reproduction in flowering plants is essential for genetic diversity and the survival of the species. It allows for the exchange and recombination of genetic material, leading to variations in offspring. These variations enhance the adaptability of plants to changing environmental conditions, such as disease resistance, tolerance to different climates, and the ability to attract different pollinators. Additionally, sexual reproduction facilitates the dispersal of offspring through the production of seeds, ensuring the colonization of new areas.
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