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प्रश्न
Tick the most appropriate answer.
Exhaled air contains
पर्याय
more carbon dioxide
more oxygen
more nitrogen
more hydrogen
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उत्तर
more carbon dioxide
APPEARS IN
संबंधित प्रश्न
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.
State whether the following statement is True or False:
The free oxygen in the atmospheric air is the result of photosynthesis.
Long answer question.
Do plants need oxygen? If so, what is its source?
Tick the most appropriate answer.
Plants have these for the exchange of gases.
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.
Photorespiration is favoured by :
Law of limiting factor is
Why does the rate of photosynthesis decrease at higher temperatures?
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
