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प्रश्न
In tropical rain forests, the canopy is thick and plants growing below receive filtered light. How are they able to carry out photosynthesis?
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उत्तर
Light is rarely a limiting factor for photosynthesis because just 10% of the full sunlight is sufficient to ensure light saturation. In plants that thrive under a large canopy in forests; a less percentage of light may slow down the rate of photosynthesis but it cannot halt photosynthesis during daytime. Hence, these plants are able to carry on photosynthesis.
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संबंधित प्रश्न
Short answer question.
Why do leaves generally look green?
Short answer question.
Which four of the following are needed for photosynthesis in a leaf:
(i) Carbon dioxide:
(ii) Oxygen:
(iii) Nitrates :
(iv) Water:
(v) Chlorophyll:
(vi) Soil:
(vii) Light:
State whether the following statement is True or False:
The chlorophyll enables the plants to use light energy.
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?
Tick the most appropriate answer.
Exhaled air contains
Attempt any TWO of the following:
Describe ‘any two’ factors affecting the rate of photosynthesis.
Identify the false statement and rewrite it correctly by changing the first or last word only.
Photosynthesis stops at a temperature of about 35°C.
Are the following statement true or false? Give a reason in support of your answer.
The outside atmospheric temperature has no effect on the rate of photosynthesis.
Identify true statement regarding light reaction of photosynthesis.
Two groups (A & B) of bean plants of similar size and same leaf area were placed in identical conditions. Group A was exposed to the light of wavelength 400-450 nm & Group B to light of wavelength of 500-550 nm. Compare the photosynthetic rate of the 2 groups giving reasons.
When there is plenty of light and a higher concentration of O2, what kind of pathway does the plant undergo? Analyse the reasons.
Law of limiting factor is
According to Blackman, respiration of carbohydrates and fats is ______.
The figure shows the effect of light on the rate of photosynthesis. Based on the graph, answer the following question:
- At which point/s (A, B or C) in the curve is light a limiting factor?
- What could be the limiting factor/s in Region A?
- What do C and D represent on the curve?
Graph of light intensity on the rate of photosynthesis
The optimum temperature for the process of photosynthesis is ______.
