Class 7 Exam > Class 7 Videos > Science Class 7 > Process of Pollination
Process of Pollination Video Lecture | Science Class 7
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FAQs on Process of Pollination Video Lecture - Science Class 7
| 1. What is pollination? |  |
Ans. Pollination is the transfer of pollen grains from the male reproductive part of a flower (anther) to the female reproductive part (stigma) of the same or another flower, leading to fertilization and the production of seeds.
| 2. How does pollination occur? | |
Ans. Pollination can occur through various mechanisms, including wind, water, and animals. In animal pollination, animals like bees, butterflies, birds, or bats transfer pollen while they visit flowers in search of nectar or pollen. These animals inadvertently pick up pollen on their bodies and transfer it to other flowers as they move from one flower to another.
| 3. What is the role of insects in pollination? | |
Ans. Insects, especially bees, play a crucial role in pollination. Bees are attracted to flowers by their bright colors and sweet fragrances. As bees collect nectar, they also collect pollen on their bodies. This pollen is then transferred to other flowers, facilitating the pollination process and ensuring the reproductive success of flowering plants.
| 4. Can wind also be a method of pollination? | |
Ans. Yes, wind can be a method of pollination. Some plants have evolved mechanisms to release lightweight and abundant pollen grains into the air. These pollen grains are then carried by the wind to other flowers for pollination. This type of pollination is called anemophily and is common in plants like grasses, trees, and some flowers.
| 5. How does pollination contribute to plant reproduction? | |
Ans. Pollination is essential for plant reproduction as it leads to fertilization and the production of seeds. When pollen grains land on the stigma of a flower, they germinate and grow pollen tubes, allowing the sperm cells to reach the ovules. Fertilization occurs when the sperm cells fuse with the egg cells, resulting in the formation of seeds. These seeds then develop into new plants, ensuring the survival and continuation of plant species.
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Nov 21, 2024 Last updated |
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