BIO 102 Lecture Notes - Lecture 8: Sporophyte, Cyanobacteria, Phycobilin

• School: URI
• Department: Biological Sciences
• Course: BIO 102
• Professor: Cary Andrew

Document Summary

Mostly photosynthetic like plants: 4 kinds: blue, red, brown, and gold. Groups: red algae, green algae, kelps/brown algae, diatoms, golden algae, dinoflagellates. Each algal cell has at least 2 primary endosymbiotic events. Endosymbiosis: 1 host cell takes in a cell and it lives within the host as a symbiosis. I(cid:374)ter(cid:374)al (cid:862)(cid:272)ell(cid:863) (cid:374)ow is a(cid:374) orga(cid:374)elle with its ow(cid:374) dna, ri(cid:271)oso(cid:373)es, a(cid:374)d (cid:373)e(cid:373)(cid:271)ra(cid:374)es fro(cid:373) the different evolutionary lineage. Monophyletic group includes: red and green algae and land plants, in a separate kingdom. Groups are classified together based on molecular data and presence of chloroplasts bounded by 2 membranes suggesting they developed directly from a cyanobacterial endosymbiont. Complex multicellular body consisting of interwoven filaments; some are flattened sheets. Reproduction: alternation of generations and asexual reproduction. Some incorporate calcium carbonate from ocean water into cell walls. Some of the oldest eukaryotic organisms on earth. Rhodophyta other features: phycobilins, accessory proteins present in cyanobacteria, mask chlorophyll looks red.