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Write short notes on Diffusion....

Write short notes on Diffusion.

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Diffusion is the movement of molecules of substance (gas, liquid or solid) from the region of higher concentration to the region of lower concentration. Diffusing particles exert pressure called diffusion pressure.
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ICSE-SAMPLE QUESTION PAPER -5-SECTION-II
  1. Write short notes on Diffusion.

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  2. The diagram given below represents an organ system in the human body. ...

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  3. Give biological reason for the following : On sprinkling common salt...

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  4. Comment upon the following : Wilted lettuce becomes crisp/firm when ...

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  5. Gametes have a haploid number of chromosomes.

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  6. Account for the following briefly : Herbaceous plants growing in wel...

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  7. Give reasons : Plants begin to die when excess of soluble fertilizer...

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  8. Given below is an experimental set-up to study a particular process: ...

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  9. Match the items given in Column A with the most appropriate ones in Co...

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  10. Study the diagrams given below and answer the questions tht follow: ...

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  11. The following paragraph is related to absorption of water from the soi...

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  12. The figure given below represents an experiment to demonstrate a parti...

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  13. Match the items givenn in Column A with the most appropriate ones in C...

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  14. Given alongside is a diagram of the human heart showing its internal s...

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  15. Differentiate between the following pair on the basis of what is menti...

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  16. Differentiate between the following pair on the basis of what is menti...

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  17. Differentiate between : Testosterone and Oestrogen (organ which s...

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  18. Differentiate between the following pair on the basis of what is menti...

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  19. Differentiate between the following pairs on the basis of what is ment...

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  20. Study the diagram given below which represents a stage during the mito...

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  21. How does the arrangement of neurons in the spinal cord differ from tha...

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