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प्रश्न
Tick the most appropriate answer.
Plants have these for the exchange of gases.
पर्याय
spiracles and stomata
lenticels and spiracles
lenticels and stomata
buds and flowers
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उत्तर
lenticels and stomata
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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:
Green plants prepare their food by using two raw materials, oxygen and water.
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?
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.
Why does the rate of photosynthesis decrease at higher temperatures?
The optimum temperature for the process of photosynthesis is ______.
