Question

Short Answer Type Questions


1. What is dialysis?

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2 How does absorption of water and nutrients take place in the root ?

ans

3. Explain the excretion in fishes, birds, lizards and snakes.

ans

4. How are water and minerals transported in the plants?

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5. Write the differences between arteries and veins.

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6. What is heart beat? Write its importance.

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7. Explain the structure and use of stethoscope.

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8. How does the heart avoid the mixing of oxygen rich blood and carbon dioxide rich blood

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Class 7
D. Long Answer Type Questions​

Answer 1

Answer:

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