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Question
Choose the correct answer:
Meaning of ascent of sap is ____________
Options
absorption of water from soil.
alteration of water against gravitational force.
reaching of water upwards against gravitational force.
origin of cohesive force in water.
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Solution
Meaning of ascent of sap is reaching of water upwards against gravitational force
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RELATED QUESTIONS
Draw a magnified view of the root-hair, and describe, how it helps in the absorption of water from the soil.
Which one of the following is a characteristic NOT related with the suitability of the roots for absorbing water?
Mention whether the following statement is true or false. Correct the false statement by altering the last word only.
Xylem is the water conducting tissue in plants.
Choose the correct answer:
The water is translocated upwards from the roots through _____________
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. |
Describe structure of root hair.
Water which is absorbed by roots is transported to aerial parts of the plant through ______
Roots of the plants absorb water from the soil through the process of ____________.
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?
