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प्रश्न
Distinguish between the following:
Transpiration and evaporation
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उत्तर
| Transpiration | Evaporation | ||
| 1. | Loss of water in the form of vapour from aerial parts of the plant. | 1. | Loss of water from the surface of the water bodies in the form of vapour |
| 2. | It is a vital and partly physical process controlled by both internal and external factors. | 2. | It is a physical change that the atmosphere's temperature and humidity control. |
| 3. | It is a slow process. | 3. | It is a fast process. |
संबंधित प्रश्न
Mention the two ways in which transpiration helps the plants.
Choose the correct answer:
Who had said that "transpiration is a necessary evil"?
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
Give Technical Term
Main function of lenticel.
Complete the following sentence with appropriate word:
Transpiration is the loss of water__________________from the leaves of the plant.
Complete the following sentence with appropriate word:
The leaves of the __________ plants have cuticular wax.
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.
Column ‘II’ is a list of items related to ideas in Column ‘I’. Match the term in Column ‘II’ with a suitable idea given in Column ‘I’.
| Column I | Column II |
| (i) Transpiration | (a) Cacti plants |
| (ii) Movement of water | (b) Stomata |
| (iii) Guttation | (c) Maize plant |
| (iv) Low rate of transpiration | (d)Xylem |
| (v) The high rate of transpiration | (e) Hydathodes |
