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Answer the following questions briefly :...

Answer the following questions briefly :
Explain how the human eye adapts itself to bright light and dim light.

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Bright light - Pupils constrict, Rhodopsin is bleached.
Dim light - Pupils dilate, Rhodopsin is regenerated.
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ICSE-SAMPLE QUESTION PAPER -5-SECTION-II
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  7. The figure given below represents an experiment to demonstrate a parti...

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

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

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

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

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  18. Answer the following questions briefly : Explain how the human eye a...

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  19. What is Parthenocarpy ? Give one example.

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