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Photosynthesis: Brief Overview Video Lecture | General Awareness for SSC CGL

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FAQs on Photosynthesis: Brief Overview Video Lecture - General Awareness for SSC CGL

1. How does photosynthesis work?
Ans. Photosynthesis is a process in which plants, algae, and some bacteria convert light energy, usually from the sun, into chemical energy stored in glucose. This process involves the absorption of light by chlorophyll, a green pigment in plant cells, which then uses this energy to convert carbon dioxide and water into glucose and oxygen.
2. What are the main stages of photosynthesis?
Ans. Photosynthesis can be divided into two main stages: the light-dependent reactions and the light-independent reactions. During the light-dependent reactions, light energy is used to split water molecules into oxygen, protons, and electrons. In the light-independent reactions, also known as the Calvin cycle, these products are used to produce glucose from carbon dioxide.
3. What factors can affect the rate of photosynthesis?
Ans. Several factors can influence the rate of photosynthesis, including light intensity, temperature, carbon dioxide levels, and water availability. Higher light intensity generally leads to a faster rate of photosynthesis, while extreme temperatures or limited water supply can hinder the process.
4. How is photosynthesis important for the environment?
Ans. Photosynthesis is crucial for the environment as it is the primary process through which oxygen is produced. Plants release oxygen as a byproduct of photosynthesis, which is essential for the survival of most living organisms on Earth. Additionally, photosynthesis helps regulate the levels of carbon dioxide in the atmosphere.
5. Can photosynthesis occur at night?
Ans. Photosynthesis primarily occurs during the day when there is sunlight available for plants to absorb. However, some plants, like certain succulents and cacti, perform a type of photosynthesis called CAM photosynthesis, which allows them to take in carbon dioxide at night and store it for use during the day.
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