Class 4 Exam > Class 4 Videos > Science for Class 4 > Fun Video: Photosynthesis
Fun Video: Photosynthesis Video Lecture | Science for Class 4
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FAQs on Fun Video: Photosynthesis Video Lecture - Science for Class 4
| 1. What is photosynthesis? |  |
Ans. Photosynthesis is the process by which plants, algae, and some bacteria convert sunlight, carbon dioxide, and water into glucose and oxygen. This process allows plants to produce their own food and release oxygen into the atmosphere.
| 2. How does photosynthesis occur? | |
Ans. Photosynthesis occurs in the chloroplasts of plant cells. The chloroplasts contain a green pigment called chlorophyll, which captures sunlight energy. This energy is then used to convert carbon dioxide and water into glucose and oxygen through a series of complex chemical reactions.
| 3. What are the main inputs and outputs of photosynthesis? | |
Ans. The main inputs of photosynthesis are carbon dioxide, water, and sunlight. These are used to produce glucose (a form of sugar) and oxygen. The glucose is used by the plant for energy, while the oxygen is released into the atmosphere.
| 4. Why is photosynthesis important for the environment? | |
Ans. Photosynthesis is crucial for the environment as it is responsible for the production of oxygen. Oxygen is essential for all living organisms to survive. Additionally, photosynthesis helps reduce the concentration of carbon dioxide in the atmosphere, which helps regulate the Earth's climate.
| 5. How does photosynthesis impact the food chain? | |
Ans. Photosynthesis is the primary source of energy for most ecosystems. Plants, as primary producers, convert sunlight energy into glucose, which is then consumed by herbivores. These herbivores are then consumed by carnivores, creating a food chain. Without photosynthesis, the food chain would collapse, and most life on Earth would not be sustainable.
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Dec 22, 2024 Last updated |
Video Description: Fun Video: Photosynthesis for Class 4 2024 is part of Science for Class 4 preparation.
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