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प्रश्न
Why is transport of materials necessary in a plant or in an animal? Explain.
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उत्तर
- Transport of materials is necessary in both plants and animals, as every cell needs a regular supply of nutrients and oxygen to release energy through respiration.
- The food that we eat is broken down into smaller components to be absorbed by the cells. The oxygen that we inhale is also transported to all the cells of the body.
- In plants and animals, food, water, oxygen and other important useful substances are transported to various parts of the body through blood through which a human being performs biological activities.
- Through transportation, harmful substances produced in those organs, such as carbon dioxide, sweat, urine, etc., are removed from the body. Therefore, the transportation of substances is necessary for plants and animals.
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संबंधित प्रश्न
What substance/substances are transported in plants by:
xylem vessels and tracheids?
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.
Match the following.
| 1. Symplastic pathway | (a) Leaf |
| 2. Transpiration | (b) Plasmodesmata |
| 3. Osmosis | (c) Pressure in xylem |
| 4. Root Pressure | (d) Pressure gradient |
The phloem is responsible for the translocation of food.
When any dry plant material is kept in water, they swell up. Name and define the phenomenon involved in this change.
Plants use the energy stored in ATP to accomplish the process of transportation of:
Assertion: Resins and gums are stored in old xylem tissue in plants.
Reason: Resins and gums facilitate transport of water molecules.
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.
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 | (c) Drosera |
