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Question
Choose the correct answer:
Transpiration is more ____________
Options
From the upper surface of leaf.
From the lower surface of leaf.
From stem.
From upper and lower surface of leaf.
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Solution
Transpiration is more From the lower surface of leaf
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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 set-up was placed in bright sunlight. Study the diagram and answer the following questions:

- Name the process intended for the study.
- Define the above mentioned process.
- When the weight of the test tubes (A and B) is taken before and after the experiment, what is observed? Give reasons to justify your observations in A & B.
- What is the purpose of keeping the test tube B in the experimental set-up?
- What is the purpose of putting oil in the test tube?
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.
Give Technical Term
The apparatus used to compare the rate of transpiration in cut shoot.
Mention, if the following statement is True or False. If false rewrite the wrong statement in its correct form:
Root hairs are the extensions of the outer epidermal cells of the root
Transpiration is significant for all except ______.
