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प्रश्न
Three plants (a), (b) and (c) were placed in beakers containing coloured water. The water in each beaker was covered with a layer of oil. The leaves were removed from plant (b), while plant (c) was exposed to strong light.
(i) In which plant, (a), (b) or (c) would the water move up the fastest?
(ii) In which plant (a), (b) or (c), would the water move up slowly?
(iii) Why was the water covered with a layer of oil?
(iv) What is being investigated by this experiment?
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उत्तर
(i) In (c), the water would move up the fastest.
(ii) In (b), the water would move up slowly.
(iii) To prevent evaporation of water.
(iv) Absorption of water by the roots.
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संबंधित प्रश्न
The phenomenon of loss of water through a cut stem or injured part of plant is called ___________.
Name the following:
The process by which water enters root hairs.
Give reason for the following:
If you uproot a plant from the soil, its leaves soon wilt.
What would happen to the root hair of a potted plant if the soil was watered with an extremely concentrated solution of sodium chloride?
Mention whether the following statement is true (T) or false (F) and give an explanation in support of your answer.
If the phloem of a twig is removed keeping the xylem intact, the leaves of a twig wilt.
A few RBC’s were kept in three test tubes containing isotonic, hypotonic and hypertonic solutions. What will be the expected observations after a few hours? Explain.
What is the composition of an outer layer of root hair?
How many regions are there in a typical root?
How many regions are there in a typical root?
Aquatic animals like fish excrete their wastes in gaseous form as ______.
