Bio 111 8.3 – Flashcards
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Chlorophyll is the main pigment found in plants. Other pigments are also present. If these other pigments were lost from a plant, but chlorophyll remained, what effect would this have on the plant?
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The plant would no longer be able to absorb wavelengths of light distinct from the ones absorbed by chlorophyll
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Absorption spectra
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reflects, absorbs,blue,green
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Many, but not all, plants are green in color. A Japanese maple, for instance, uses dark red leaves for photosynthesis. What can you infer about the light color used by a Japanese maple for photosynthesis?
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The Japanese maple transmits or reflects red light
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Why are green plants green in color?
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They contain a pigment that transmits and reflects green light
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Chlorophyll b absorbs green wavelengths of light that chlorophyll a cannot absorb. In this respect, chlorophyll b acts as:
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an accessory pigment.
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Fall leaf color on deciduous trees is a result of:
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cessation of chlorophyll production, which allows the accessory pigments to be revealed.
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Why is eating carrots thought to be useful for enhancing vision?
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High levels of beta-carotene can lead to the production of a pigment used in vision.
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Carotenoids are important to many plants because these pigments are able to:
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absorb wavelengths of light that neither chlorophyll a nor b can absorb.
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What are the characteristics of red light, which is absorbed by chlorophylls?
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Its photons have the longest wavelength in the visual spectrum
