The red and green algae are descendents of the primary endosymbiosis event that resulted in the first chloroplast. Red algae are primarily marine and can be unicellular or multicellular. They have a c...The red and green algae are descendents of the primary endosymbiosis event that resulted in the first chloroplast. Red algae are primarily marine and can be unicellular or multicellular. They have a complex alternation of generations life cycle with an extra diploid phase.
The phycoerythrin in their chloroplasts reflects red light, giving them a red appearance, and absorbs the blue light that is able to penetrate to deeper areas in the water column. During fertilization...The phycoerythrin in their chloroplasts reflects red light, giving them a red appearance, and absorbs the blue light that is able to penetrate to deeper areas in the water column. During fertilization, a spermatium fuses with the trichogyne and the nucleus of the spermatium travels down the tube to the egg. The outer layer of the cystocarp, the pericarp (peri- meaning around) is derived from the female gametophyte and is haploid.
