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प्रश्न
Mark the most appropriate answer in the following:
In hot summer days, plant cooling is due to :
विकल्प
Loss of water vapours from leaves
Transport of water in a plant
Loss of liquid water
Loss of water from the entire plant
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उत्तर
Loss of water vapours from leaves
APPEARS IN
संबंधित प्रश्न
Mention the two ways in which transpiration helps the plants.
Transpiration pull will be maximum under which set of the following conditions?
Briefly explain how the rate of transpiration is affected by
Intensity of light
Briefly explain how the rate of transpiration is affected by:
Humidity of the atmosphere
Explain the Term :
Hydathode
Name the three types of transpiration.
The following diagram is set up to demonstrate an experiment.
Five plants A, B, C, D, and E were placed in a beaker containing water. The water in each beaker was covered with a layer of oil. The leaves were removed from plant D in plant B, upper surfaces of all the leaves were covered with Vaseline, in-plant C the lower surfaces of all the leaves were covered with Vaseline and plant E was exposed to strong light. The beakers were then left for a few hours and at the end of the experimental period, weights of each beaker were taken.
Write the correct answer out of the five available choices given under each question:
I. In which beaker would you expect the greatest decrease in weight?
(i) A (ii) B (iii) C (iv) D (v) E
II. In which beaker the change of weight would be minimum?
(i) A (ii) B (iii) C (iv) D (v) E
III. Which plant would remain healthy for a longer period of time?
(i) A (ii) B (iii) C (iv) D (v) E
IV. In this experiment which plant can be considered as the uncontrolled one?
(I) A (ii) B (iii) C (iv) D (v) E
V. The difference of weight would b maximum between:
(i) A and B (ii) A and C (iii) A and D (iv) A and E (v) D and E
Complete the following sentence with appropriate word:
Plants become cool as a result of __________.
Complete the following sentence with appropriate word:
Transpiration normally takes place in the presence of ___________.
State the Location:
Hydathodes
