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प्रश्न
Why should the light-dependent reaction occur before the light-independent reaction?
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उत्तर
During light-dependent reaction, photosynthesis pigment absorbs the light energy and convert it into chemical energy ATP and NADPH2.
During light-independent CO2 is reduced into carbohydrates with the help of ATP and NADPH2 produced during the light-dependent reaction.
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संबंधित प्रश्न
Give appropriate biological/technical terms for the following:
An apparatus that measures the rate of water uptake in a cut shoot due to transpiration.
The diagram below shows two test-tubes A and B. Test-tube A contains a green water plant. Test-tube B contains both a green water plant and a snail. Both testtubes are kept in sunlight. Answer the questions that follow:
(i) Name the physiological process that releases the bubbles of oxygen.
(ii) Explain the physiological process as mentioned above in Q2 (a)(i).
(iii) What is the purpose of keeping a snail in test-tube ‘B’?
(iv) Why does test-tube ‘B’ have more bubbles of oxygen?
(v) Given an example of a water plant that can be used in the above process.
(vi) Write the overall chemical equation for the above process.
Name the following:
The process of conversion of ADP into ATP during photosynthesis.
Given below is an experimental setup to demonstrate a particular tropic movement in germinating seeds. Study the diagram and answer the questions that follow:
- Label the parts 1 and 2.
- Name the tropic movement shown by part 1.
- Part 1 is affected by two stimuli. Name them. Which one of the two is stronger?
- What is thigmotropism? Give one example.
- What is meant by 'Positive' and 'Negative' tropic movements in plants?
Mention any two points in which photosynthesis and respiration in plants are opposite to each other.
A candidate studied the importance of certain factors in photosynthesis. He took a potted plant and kept in the dark for over 24 hours. In the early hours of the next morning, he covered one of the leaves with black paper in the centre only. Then he placed the plant in sunlight for a few hours and tested the leaf which was covered with black paper for starch.
Is there any control in this experiment? If so, state it.
What is meant by the photolysis of water?
Complete the following sentence with appropriate word:
AIIP stands for ____________.
Choose the correct option.
The net result of photo-oxidation of water is release of ______.
1. What happens to the dandelion flower
- During the daytime?
- At night?
2. What is the phenomenon known as?
