PLANT PHYSIOLOGY
PHOTOSYNTHESIS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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because they contain chlorophyll, which reflects wavelengths of light in the red range
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because they contain chlorophyll, which absorbs wavelengths of light in the green range
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because they contain chlorophyll, which reflects wavelengths of light in the green range
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None of the above
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Detailed explanation-1: -Chlorophyll absorbs certain wavelengths of light within the visible light spectrum. Chlorophyll absorbs light in the red (long wavelength) and the blue (short wavelength) regions of the visible light spectrum. Greenlight is not absorbed but reflected, making the plant appear green.
Detailed explanation-2: -Chlorophyll gives plants their green color because it does not absorb the green wavelengths of white light. That particular light wavelength is reflected from the plant, so it appears green. Plants that use photosynthesis to make their own food are called autotrophs.
Detailed explanation-3: -So, plants and their leaves look green because the “special pair” of chlorophyll molecules uses the red end of the visible light spectrum to power reactions inside each cell. The unused green light is reflected from the leaf and we see that light.
Detailed explanation-4: -Leaves are green in colour because of the presence of green colour pigments within the plant cell called chlorophyll.
Detailed explanation-5: -Chlorophyll a absorbs wavelengths from either end of the visible spectrum (blue and red), but not from green. Because green is reflected, chlorophyll appears green. Other pigment types include chlorophyll b (which absorbs blue and red-orange light) and the carotenoids.