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प्रश्न
Why is transport of materials necessary in a plant or in an animal? Explain.
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 are the components of the transport system in highly organised plants?
What substance/substances are transported in plants by:
xylem vessels and tracheids?
What is the other name of main vein?
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.
How do plants absorb water? Explain.
When any dry plant material is kept in water, they swell up. Name and define the phenomenon involved in this change.
Why is transpiration important for plants?
In a tall tree, which force is responsible for pulling water and minerals from the soil?
These consist of two statements – Assertion (A) and Reason (R). Answer these questions selecting the appropriate option given below:
Assertion: Amphibians can tolerate mixing of oxygenated and deoxygenated blood.
Reason: Amphibians are animals with two chambered heart
