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प्रश्न
Name the following:
Name the process by which intact plants lose water in the form of droplets.
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उत्तर
Guttation
APPEARS IN
संबंधित प्रश्न
State whether the following statement is true or false. Rewrite the false statement correctly.
Water absorption mainly occurs through the root-hair.
Draw a magnified view of the root-hair, and describe, how it helps in the absorption of water from the soil.
Explain the mechanism of closing and opening of the stomata.
Study the experimental setup in the figure and then answer the question that follow.
What is meant by 'semipermeable membrane'?
Name the following:
Root hairs are the extension of which cells.
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. |
Which part of the root helps in the maximum absorption of water and minerals?
____________ regions are present in a typical root.
Look at Figure. Draw another figure of the same set-up as would be observed after a few hours.
Draw a neat and proportionate diagram of root hair and label mitochondria, nucleus and vacuole.
