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प्रश्न
When any dry plant material is kept in water, they swell up. Name and define the phenomenon involved in this change.
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उत्तर
The swelling up is due to Imbibition. Imbibition is a type of diffusion in which a solid absorbs water and gets swelled up. If Imbibition were not there, seedlings would not have been able to emerge out of the soil.
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संबंधित प्रश्न
Water absorption through roots can be increased by keeping the plants ______.
Why is transport of materials necessary in a plant or in an animal? Explain.
Does transpiration serve any useful function in the plants? Explain.
What is the need of special tissues or organs for transport of substances in plants and animals?
Crossword Puzzle
ACROSS
1. Special tubes through which food material is carried inside the plants body.
3. Channel through which movement of water and minerals occurs.
4. Red coloured fluid inside blood vessels.
5. Loss of water in vapour from the leaves.
9. Four chambered organ located in the chest cavity.
10. Blood vessels which bring blood into the heart. DOWN
2. Red coloured pigment which is a carrier of oxygen.
6. Blood vessels which carry blood from the heart.
7. Blood cells which help in clotting of blood.
8. Process by which water passes into the root hair.
How do plants absorb water? Explain.
Why is transpiration important for plants?
How do leaves of plants help in excretion?
Match the pairs.
| Group ‘A’ | Group ‘B’ | ||
| (1) | Parasitic plant | (a) | Mushroom |
| (2) | Insectivorous plant | (b) | Lichen |
| (3) | Saprophytic plant | (c) | Drosera |
| (4) | Symbiotic plant | (d) | Cuscuta |
We need to water the soil in plants on a regular basis but it ultimately reaches the leaves of the plant. Explain how this takes place.
