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प्रश्न
Look at leaves of the same plant on the shady side and compare it with the leaves on the sunny side. Or, compare the potted plants kept in the sunlight with those in the shade. Which of them has leaves that are darker green? Why?
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उत्तर
- Light is a limiting factor for photosynthesis. Leaves get less light for photosynthesis when they are in shade.
- Therefore, the leaves or plants in shade perform less photosynthesis as compared to the leaves or plants kept in sunlight.
- In order to increase the rate of photosynthesis, the leaves present in shade have more chlorophyll pigments.
- The pace of photosynthesis is accelerated by the leaves' increased ability to absorb light due to the rise in chlorophyll content.
- Therefore, the leaves or plants in shade are greener than the leaves or plants kept in the sun.
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संबंधित प्रश्न
Short answer question.
Which gas is taken in and which one is given out by the leaf in bright sunlight?
(i) Taken in :
(ii) Given out:
State whether the following statement is True or False:
Green plants prepare their food by using two raw materials, oxygen and water.
State whether the following statement is True or False:
The chlorophyll enables the plants to use light energy.
State whether the following statement is True or False:
The free oxygen in the atmospheric air is the result of photosynthesis.
State whether the following statement is True or False:
Photosynthesis occurs only in chlorophyll-containing parts of the plant.
Long answer question.
In order to carry out photosynthesis, what are the substances that a plant must take in? Also mention their sources.
Long answer question.
What is the role of chlorophyll in photosynthesis?
Long answer question.
Do plants need oxygen? If so, what is its source?
Answer the following in one word.
Which organ is called the voice box?
Attempt any TWO of the following:
Describe ‘any two’ factors affecting the rate of photosynthesis.
Identify true statement regarding light reaction of photosynthesis.
When there is plenty of light and a higher concentration of O2, what kind of pathway does the plant undergo? Analyse the reasons.
Draw and label the structure of oxysomes.
Process of photosynthesis is ______.
Photorespiration is favoured by :
Law of limiting factor is
Why does the rate of photosynthesis decrease at higher temperatures?
The optimum temperature for the process of photosynthesis is ______.
