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प्रश्न
The figure below represents the set-up at the start of certain experiment to demonstrate an activity of plants:
(i) What is the aim of the experiment?
(ii) Why has oil been put in each test tube?
(iii) What will be the observations in the two test-tubes after about 2-3 days?
(iv) Give reasons to explain any change observed as answered in (iii) above.
(v) Why has the test-tube b without the plant, been taken in the experiment?
उत्तर
(i) The aim of the experiment is to demonstrate transpiration.
(ii) To prevent the evaporation of water from the surface.
(iii) The level of water in test tube (a) will decrease.
(iv) The fall in the water level in the test tube (a) is because of transpiration through aerial parts of the plant.
(v) Test tube (b) has been taken as a control experiment. Since no transpiration takes place without the plant.
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संबंधित प्रश्न
Define the three processes by which plants absorb water and minerals from the soil.
Define the term Transpiration stream
Give suitable explanation for the following:
On a bright sunny day, the leaves of certain plants roll up.
Choose the correct answer:
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Why is transpiration called a necessary evil?
Excessive transpiration is due to ______.
Do different species of plants growing in the same area show the same rate of transpiration at a particular time? Justify your answer.
How can plants be grown under limited water supply without compromising on metabolic activities?
Transpiration occurs:
