PLB 300 Lecture Notes - Lecture 20: Photic Zone, Phycobilin, Chlorophyll
Document Summary
Accessory pigments (vary among taxa: chlorophyll b, chlorophyll c, carotenoids, phycobilins. What do pigments do with the light energy they absorb: pigment molecule may, transfer energy to another pigment molecule or, transfer a high-energy electron to an electron-accepting molecule in the electron transport chain (just chlorophyll a!) m. 1 t a t h g i l e l b i s i v f o e g a t n e c r e. Only certain wavelengths of light are available under water. In green algae, photosynthesis is driven most efficiently by wavelengths of about 425nm and. Phycobilins, xanthrophylls, etc. allow use of most abundant wavelength under water. Light penetrates farther in freshwater than in seawater y t i s n e t n i t h g i l e v i t a l e. How deep the photic zone is depends on what photosynthetic organisms are there and what pigments they have.
