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प्रश्न
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उत्तर
Experiment to show that during transpiration , evaporation of water takes place in vapour form :
- Take a well watered potted plant .
- Cover the potted plant in a polythene sheet.
- Keep the potted plant in the sunlight.
- Droplets of water are seen on the inner side of the polythene . This shows that the water evaporates and condenses to form droplets of water .
APPEARS IN
संबंधित प्रश्न
Transpiration helps in creating ______ force and in eliminating excess ______.
Given below is an example of a certain structure and its special functional activity:
chloroplasts and photosynthesis
In a similar way, write the functional activity against the following:
Xylem and ______
Give Reasons for the following:
Plants absorb more water than their requirement
Explain the term:
Cuticular transpiration
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:
Transpiration takes place only in green plants
Mention, if the following statement is True or False. If false rewrite the wrong statement in its correct form:
The pH of the guard cells increases during day time
State the Location:
Cuticle
