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Which of the following are related to the process of photosynthesis?
1. Absorption of light energy by chlorophyll.
2. Conversion of light energy to chemical energy and splitting of water molecules into hydrogen and oxygen.
3. Reduction of carbon dioxide to carbohydrates. Select the correct answer using the code given below.
- a)1 and 2 only
- b)2 and 3 only
- c)1 and 3 only
- d)1, 2 and 3
Correct answer is option 'D'. Can you explain this answer?
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Which of the following are related to the process of photosynthesis?1....
Photosynthesis Process
Absorption of light energy by chlorophyll:
- Chlorophyll is a pigment found in the chloroplasts of plant cells.
- It absorbs light energy from the sun, mainly in the red and blue regions of the electromagnetic spectrum.
Conversion of light energy to chemical energy and splitting of water molecules:
- Light energy absorbed by chlorophyll is converted into chemical energy in the form of ATP and NADPH.
- This energy is used to split water molecules into hydrogen and oxygen through a process called photolysis.
Reduction of carbon dioxide to carbohydrates:
- The hydrogen extracted from water molecules is used to reduce carbon dioxide to carbohydrates such as glucose through a series of enzymatic reactions known as the Calvin cycle.
- This process occurs in the stroma of the chloroplast.
Therefore, all three processes mentioned are essential components of photosynthesis. Absorption of light energy by chlorophyll, conversion of light energy to chemical energy and splitting of water molecules, and reduction of carbon dioxide to carbohydrates work together to produce glucose, which serves as the primary source of energy for plants.
Absorption of light energy by chlorophyll:
- Chlorophyll is a pigment found in the chloroplasts of plant cells.
- It absorbs light energy from the sun, mainly in the red and blue regions of the electromagnetic spectrum.
Conversion of light energy to chemical energy and splitting of water molecules:
- Light energy absorbed by chlorophyll is converted into chemical energy in the form of ATP and NADPH.
- This energy is used to split water molecules into hydrogen and oxygen through a process called photolysis.
Reduction of carbon dioxide to carbohydrates:
- The hydrogen extracted from water molecules is used to reduce carbon dioxide to carbohydrates such as glucose through a series of enzymatic reactions known as the Calvin cycle.
- This process occurs in the stroma of the chloroplast.
Therefore, all three processes mentioned are essential components of photosynthesis. Absorption of light energy by chlorophyll, conversion of light energy to chemical energy and splitting of water molecules, and reduction of carbon dioxide to carbohydrates work together to produce glucose, which serves as the primary source of energy for plants.
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Which of the following are related to the process of photosynthesis?1....
- An autotroph is an organism that can produce its own food using light, water, carbon dioxide, or other chemicals. Carbon and energy requirements of the autotrophic organism are fulfilled by photosynthesis.
- Photosynthesis is the process by which autotrophs take in substances from the outside and convert them into stored forms of energy. This material is taken in the form of carbon dioxide and water which is converted into carbohydrates in the presence of sunlight and chlorophyll. Carbohydrates are utilised for providing energy to the plant.
- The carbohydrates which are not used immediately are stored in the form of starch, which serves as the internal energy reserve to be used as and when required by the plant.
- The following events occur during this process of photosynthesis –
- Absorption of light energy by chlorophyll.
- Conversion of light energy to chemical energy and splitting of water molecules into hydrogen and oxygen.
- Reduction of carbon dioxide to carbohydrates.
- These steps need not take place one after the other immediately. For example, desert plants take up carbon dioxide at night and prepare an intermediate which is acted upon by the energy absorbed by the chlorophyll during the day.
- Hence option (d) is the correct answer.
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Which of the following are related to the process of photosynthesis?1. Absorption of light energy by chlorophyll.2. Conversion of light energy to chemical energy and splitting of water molecules into hydrogen and oxygen.3. Reduction of carbon dioxide to carbohydrates. Select the correct answer using the code given below.a)1 and 2 onlyb)2 and 3 onlyc)1 and 3 onlyd)1, 2 and 3Correct answer is option 'D'. Can you explain this answer?
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