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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
the exact location of the Lenticels
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 |
Grapes shrink when immersed in a very strong sugar solution.” Explain.
Draw a cross-section of root showing association of soil particles with root hairs.
Name the following:
Water is absorbed from the soil by which part.
________ type of tissues are present in epiphytic roots.
Define: Root hair
What is the composition of an outer layer of root hair?
Epiphytic plants like orchids absorb water vapours from air with the help of ______ having special tissue called velamen.
Identify the part of the plants which is responsible for maximum absorption of water.
