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प्रश्न
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उत्तर
(i) Roots help in the absorption of water.
(ii) They also help in the absorption of minerals.
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संबंधित प्रश्न
How is root hair adapted for the absorption of water from the soil?
Choose the correct answer:
Which one is semi-permeable?
Choose the correct answer:
Exudation or bleeding is associated with ___________
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) Diffusion | (a) The exit or flow of water from the cell to the outer environment. |
| (ii) Xylem | (b) The shrinkage of protoplasm when the cell is kept in a hypertonic solution. |
| (iii) Root pressure | (c) The tissue through which water and mineral salts move upward in a plant. |
| (iv) Isotonic solution | (d) Two solutions which have equal osmotic pressure. |
| (v) Exosmosis | (e) The process by which the molecules of perfume spread in the room when the bottle is open. |
| (vi) Osmosis | (f) The process by which roots absorb water from the soil. |
| (vii) Plasmolysis | (g) The pressure by which water rises up to some feet in a lofty tree. |
| (viii) Hypotonic solution | (h) The concentration of the solution when lower than that of the cell sap. |
What is the composition of inner layer of root hair?
Root hairs are ______
They are pipe-like, consisting of a group of specialised cells. They transport substances and form two-way traffic in plants. Which of the following terms qualify for the features mentioned above?
Aquatic animals like fish excrete their wastes in gaseous form as ______.
Root hair is a cytoplasmic extension of ______.
