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प्रश्न
Study the diagram given below and answer the questions that follow:
(i) Name the process being studied in the above experiment.
(ii) Explain the process mentioned in (i) above.
(iii) Why is oil placed over water?
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उत्तर
(i) Transpiration
(ii) It is the process by which plants lose water as vapours through the aerial parts.
(iii) To prevent evaporation of water from the test tube.
(iv)
- In bright sunlight, the level of water decreases quickly.
- In humid conditions level of water does not decrease for a long time.
- On a windy day, the level of water decreases very quickly.
(v)
- The number of stomata may be reduced.
- leaves may become narrow.
- A thick layer of cuticle on the leaf surface helps to decrease transpiration
APPEARS IN
संबंधित प्रश्न
Answer the following (only in few words);
Where does transpiration take place in leaves? Give names of the various parts.
Choose the correct answer:
Transpiration generates __________
Differentiate Between Transpiration and Translocation.
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 is the loss of water__________________from the leaves of the plant.
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
Write the functional activity of the following structure:
Lenticels
Mark the most appropriate answer in the following:
In hot summer days, plant cooling is due to :
Transpiration is significant for all except ______.
