Class 6 Exam > Class 6 Videos > Presentation - Getting to know Plants, Science, Class 6
Presentation - Getting to know Plants, Science, Class 6 Video Lecture
FAQs on Presentation - Getting to know Plants, Science, Class 6 Video Lecture
| 1. What is photosynthesis? |  |
Ans. Photosynthesis is the process by which plants convert sunlight, carbon dioxide, and water into glucose (a type of sugar) and oxygen. The chlorophyll in plant cells captures the energy from sunlight, which is then used to combine carbon dioxide and water to produce glucose. Oxygen is released as a byproduct of this process.
| 2. How do plants obtain water? | |
Ans. Plants obtain water from the soil through their roots. The root system of a plant absorbs water and nutrients from the soil and transports them to the rest of the plant. The root hairs, which are tiny projections on the surface of the roots, increase the surface area for water absorption.
| 3. What is the importance of leaves in plants? | |
Ans. Leaves are vital for plants as they play a crucial role in photosynthesis. They are the main site where photosynthesis occurs, enabling plants to convert sunlight into energy. Leaves also help in the exchange of gases, allowing plants to take in carbon dioxide and release oxygen. Additionally, leaves regulate the loss of water through tiny openings called stomata.
| 4. How do plants reproduce? | |
Ans. Plants reproduce through two main methods: sexual reproduction and asexual reproduction. In sexual reproduction, plants produce flowers and use pollination to transfer pollen from the male reproductive organs to the female reproductive organs. This leads to the formation of seeds, which grow into new plants. In asexual reproduction, plants can produce offspring without the involvement of flowers or seeds, through methods such as vegetative propagation or cloning.
| 5. Why are plants important for the environment? | |
Ans. Plants are essential for the environment for various reasons. They produce oxygen through photosynthesis, which is crucial for the survival of all living organisms. Plants also help in reducing air pollution by absorbing carbon dioxide and other air pollutants. Additionally, they provide habitats and food for various animals and contribute to the biodiversity of ecosystems. Plants also play a role in preventing soil erosion and maintaining the water cycle.
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