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प्रश्न
What is the need of special tissues or organs for transport of substances in plants and animals?
उत्तर
Organisms like plants and animals need special tissues and organs for the transport of substances because tissues and organs can easily transport essential substances like food, oxygen, and water from one part of the body to another. For example, the xylem tissues of roots, stems, and leaves are interconnected and form a continuous network of channels to transport water to all parts of the plant body.
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संबंधित प्रश्न
The xylem in plants is responsible for ______.
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 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.
The phloem is responsible for the translocation of food.
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.
