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Rate of Transpiration
Rate of Transpiration
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1)
What is the process of evaporation of water into the atmosphere from the aerial parts of plants called?
Transpiration
Respiration
Photosynthesis
Translocation
2)
Which one of the following affects the rate of transpiration? (i) Light, (ii) Temperature, (iii) Humidity, (iv) Wind
i, ii, iii and iv
i and ii
ii and iii
i, ii and iv
3)
How does humidity affect the rate of transpiration?
The higher the relative humidity of the outside atmosphere decreases the rate of transpiration.
Remains the same in either increase or decrease of humidity.
Lower relative humidity of the outside atmosphere decreases the rate of transpiration.
Higher relative humidity of the outside atmosphere increases the rate of transpiration.
4)
Out of the following, which is not the correct statement?
Distribution, number, size and type of stomata are same in every plant.
Number of stomata is different in different plants.
Size and type of stomata is different in different plants.
Distribution of stomata is different in different plants.
5)
How does temperature affect the rate of transpiration?
Transpiration won’t happen at higher temperatures.
Transpiration rate decreases at higher temperatures.
Plants transpire more rapidly at higher temperatures.
Transpiration rate increases at lower temperatures.
6)
Dry cobalt chloride paper turns blue to __________ in colour in the presence of water.
Pink
Green
White
Black
7)
A leaf from a plant is covered with cobalt chloride paper to study rate of transpiration, as shown in the figure below. Which one of the following is the correct result?
8)
An experiment is being done using cobalt chloride paper to study the rate of transpiration in upper and lower surface of the leaves. Results are shown in the below image. The time taken to change blue cobalt chloride paper to pink in the above experiment is noted in the image. Now, conclude that which side of the leaf has more stomata.
Upper surface.
Can’t tell.
Lower surface.
Equal number of stomata on both surfaces.