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Question
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Solution
The process of loss of water in the form of vapours from the aerial portions of the living plant is called transpiration.
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RELATED QUESTIONS
Answer the following (only in few words);
Give one important difference between transpiration and evaporation.
Distinguish between the following:
Transpiration and evaporation
The figure given below represents an experimental setup with a weighing machine to demonstrate a particular process in plants. The experimental setup was placed in bright sunlight. Study the diagram and answer the following questions.
When the weight of the test tubes A and B is taken before and after the experiment, what change is observed? Justify.
Give Reasons for the following:
Balsam plants wilt during midday even if the soil is well watered.
Give Reasons for the following:
Why do some herbaceous plants show wilting of leaves during mid-day which again recover in the evening?
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:
Transpiration normally takes place in the presence of ___________.
Mention, if the following statement is True or False. If false rewrite the wrong statement in its correct form:
More transpiration occurs from the upper surface of a leaf.
Give a reason/suitable explanation.
Forests tend to bring more rains.
