1. 20. The procedure used for cleaning the blood of a person by separating urea from it is called:

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  2. 19.Where is the dirty blood in our body filtered? (a) Heart (b) Lungs (c) Ureter (d) Kidneys

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  3. 18.Name the tube which connects the kidneys to the urinary bladder.

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  4. 17.Name a circulatory fluid in the human body other than blood.

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  5. 16.A blood vessel which pumps the blood from the heart to the entire body:

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  6. 15. The movement of food in phloem is called:

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  7. 14.Which plant tissue transports water and min-erals from the roots to the leaf?

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  8. 13.Name the pores in a leaf through which respi-ratory exchange of gases takes place.

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  9. 12. The breakdown of pyruvate to give carbon dioxide, water and energy takes place in

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  10. 11. The autotrophic mode of nutrition requires

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