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प्रश्न
Which of the following statements are true and which ones are false? Give reason in support of your answer.
Atmospheric humidity promotes transpiration from a green plant.
पर्याय
True
False
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उत्तर
False
Reason: Transpiration is reduced during high atmospheric humidity. High humidity in the air reduces the rate of outward diffusion of the internal water vapour across stomata, thereby reducing the rate of transpiration
संबंधित प्रश्न
State whether the following statement is true or false. Rewrite the false statement correctly.
During transpiration, the leaves lose more water from their upper surface.
Transpiration helps in creating ______ force and in eliminating excess ______.
(a) State whether the following statement are True or False.
(b) Rewrite the false statement in (a) above in the correct form by changing either the first or the last word only.
Transpiration creates a pull for the upward movement of the sap.
Given below is an apparatus which has setup to investigate a physiological process in plants. The setup was placed in bright sunlight. Answer the questions that follow:
Why was the pot enclosed in a rubber sheet?
Choose the correct answer:
Who had said that "transpiration is a necessary evil"?
Study the diagram given alongside and answer the questions that follow:
(i) Explain the physiological process of being study.
(ii) What will be the observations in the two test-tubes after about 2-3 days?
(iii) Give a reason for your answer in (ii) above.
(iv) Why is the surface of water covered with oil?
(v) State the purpose of setting up test tube B.
Complete the following sentence with appropriate word:
Plants become cool as a result of __________.
State the Location:
Cuticle
Mark the most appropriate answer in the following:
In hot summer days, plant cooling is due to :
