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प्रश्न
Study the experimental setup in the figure and then answer the question that follow.
What is meant by 'semipermeable membrane'?
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उत्तर
A semipermeable membrane is a membrane which allows the passage of molecules selectively. It allows a solvent such as water molecules to pass through it freely but prevents the passage of the solute (sugar or salt molecules in solution).
संबंधित प्रश्न
Match the items in column I with those in column II
| Column I | Column II | ||
| (a) | Xylem | (i) | semi - permeable |
| (b) | Phloem | (ii) | permeable |
| (c) | Cell membrane | (iii) | downward flow of sap |
| (d) | Root pressure | (iv) | upward flow of water |
| (e) | Cell wall | (v) | guttation |
Mention whether the following statement is true or false. Correct the false statement by altering the last word only.
The cell wall of the root cell is a differentially permeable membrane.
Give reason for the following:
If you uproot a plant from the soil, its leaves soon wilt.
Name the following:
Tissue concerned with upward conduction of water.
Mention whether the following statement is true (T) or false (F) and give explanation in support of your answer.
Dry seeds when submerged in water swell up due to endosmosis.
Study the experimental setup in the figure and then answer the question that follow.
What will you observe in the setup after about half an hour? Give reasons for your answer.
Draw a diagram of the root hair cell as it would appear when a concentrated solution of fertilizers is added near it.
What is the composition of inner layer of root hair?
Write a note on the morphological structure of the root.
What is peculiarity of epiphytic plants like orchids?
