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Ans: Photosynthesis is the process by which green plants, algae, and some bacteria convert light energy into chemical energy in the form of glucose. It occurs in the chloroplasts of plant cells, primarily in the leaves. The process involves the absorption of sunlight, carbon dioxide (CO2) uptake, and water absorption. Through a series of complex chemical reactions, oxygen is released as a byproduct, and glucose is synthesized, providing energy for the plant. Photosynthesis sustains life on Earth by producing oxygen and serving as the foundation of the food chain. The diagram below illustrates the key steps of photosynthesis.
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Ans: Transpiration is the movement of water from the roots, through the plant, and into the atmosphere. It occurs primarily through small pores called stomata on the surface of leaves. This process helps in the absorption of nutrients and minerals from the soil. Transpiration also plays a crucial role in the regulation of water in plants and the ascent of water in the xylem vessels. It's a vital component of the water cycle, contributing to the continuous circulation of water on Earth. Engaging in a simple activity, such as placing a plastic bag over a leaf and observing the water droplets formed (transpiration experiment), can provide a hands-on understanding of this process.
22 videos|80 docs|16 tests
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1. What are the different parts of a plant and their functions? |
2. How do plants reproduce? |
3. What is photosynthesis and why is it important for plants? |
4. How do plants adapt to different environments? |
5. How can we promote plant growth and health in our gardens? |
22 videos|80 docs|16 tests
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