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Actually a hypothesis about how this works and an experiment that could be formed to test the hypothesis.

2007-10-14 09:53:32 · 1 answers · asked by Holly H 2 in Science & Mathematics Botany

1 answers

There are molecules that can absorb energy in several ranges of wavelength from the sun. Each absorb only a small portion of the spectra reflecting the rest. We see what they do not absorb as the leaf color. What they absorb is the start of photosynthesis or other functions. These molecules, called pigments, come in three types or classes of pigments in the leaves of plants: chlorophylls, carotenoids, and anthocyanins. Each absorbs and reflects a different range so we see them as different colors.
Chlorophyll is the most abundant but carotenoids are present in smaller amounts in leaves. That is why there are so many variations in green leaves with some being yellower and some being bluer, the ratio of the two pigment classes varies with the kind of plant.
Chlorophylls reflect green and absorb blue more than red wavelengths. Chlorophyll a is the most important found in all photosynthetic organisms. This pigment class is includes Chlorophyll b, Chlorophyll c1, Chlorophyll c2, & Chlorophyll d that are found in plants, algae cyanobacteria and other photosynthetic creatures.

If the range of light required for photosynthesis is narrow grow plants with specific wavelengths to show optimal growth ranges. Compare standard full spectrum grow lights with lights that produce the narrow ranges of 400-475nm, 480-550nm, and 580-700nm for plant growth.

2007-10-14 11:46:08 · answer #1 · answered by gardengallivant 7 · 0 0

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