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Question
Write the functional activity of the following structure:
Hydathodes
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Solution
Plants secrete an excess of water through hydathodes when the atmosphere is very humid and the transpiration process cannot occur.
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RELATED QUESTIONS
How does temperature, light intensity and wind affect transpiration?
Transpiration helps in creating ______ force and in eliminating excess ______.
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Transplanting of seedlings to a flowerbed in the evening is better than doing so in the morning.
Explain the Term :
Hydathode
Differentiate Between Cuticular and Lenticular 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:
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Holes present on the surface of the stems and twigs for transpiration.
Mention, if the following statement is True or False. If false rewrite the wrong statement in its correct form:
Transpiration takes place only in green plants
