Question

Questions
Observe the diagram given below and answer the questions.
1. Name the physiological process being studied in the
figure alongside. Define the process.
oil
2. Why is the surface of water covered with oil?
3. What will be observed in the two test tubes after 1-2 days?
test tube
4. Give the reason for your justification in above.
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Answer 1

Explanation:

(a) the process of water absorption by plant roots through osmosis is being studied here.

(b) the surface of water was covered with oil to prevent any loss of water by evaporation.

(c) test tube B is kept as a control in the experiment. No change in the water level of test tube B will come. Test tube B acts as control in the experiment. The change in the experimental set up can be observed and compared with the control and hence it becomes easy to draw the correct conclusion.

(d) reson is in the third answer.

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