2007-11-15 12:45:38 · 2 answers · asked by Anonymous in Science & Mathematics ➔ Biology
The pigments involved have numerous different biological functions in the plant. Chlorophyll and carotenoid pigments are involved in photosynthesis. Phytochrome pigments are responsible for regulating membrane and other metabolic activities in response to light signals. Flavonoids are found in the highest concentration in the flowers and fruits of plants. Their predominate function seems to be to act as an attractant for insects to distribute pollen and seeds; however in leaves, flavonoids are thought to act as sunscreens, protecting the plant against damaging ultraviolet radiation.
2007-11-15 13:24:36 · answer #1 · answered by OKIM IM 7 · 0⤊ 0⤋
Melanin pigment makes the wall impermeable to glycerol which enters the leaf and destroys the plant. Some studies have found that Melanin acts as an anti-oxidant. Melanin as in the human skin blocks UV rays. It does the same thing for plants.
2016-05-23 08:23:09 · answer #2 · answered by holly 3 · 0⤊ 0⤋