why the part of leaf which is exposed to sunlight is dark green in colour ?
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19
Answer:
Green plants are green because they contain a pigment called chlorophyll. Chlorophyll absorbs certain wavelengths of light within the visible light spectrum. ... Green light is not absorbed but reflected, making the plant appear green.
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15
Explanation:
The upper part of the leaf has to be exposed to more sunlight so more photosynthesis can take place and in order to perform more photosynthesis the plant leaves have more chlorophyll concentration at the upper surface and thus it is darker at the top.
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