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Question
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.

What is the purpose of keeping the test tube B in the experimental setup?
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Solution
Test tube B is used here as a control. This makes the observation of the change in test tube A easy.
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Fill in the blank with the suitable term given below:
Transpiration is reduced if the air is __________.
Answer the following (only in few words);
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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.

Define the above mentioned process.
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.
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Give Technical Term
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Transpiration is the loss of water__________________from the leaves of the plant.
Transpiration is significant for all except ______.
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Forests tend to bring more rains.
