BIO 3102 : silurian and denovian.docx
Document Summary
Mouth is constantly open and is an ecto-parasite on bodies of larger fish teeth are used to attach fish and eat them alive (can detach and attach at another location). Lampreys will swim out of oceans into fresh water creeks to lay their eggs and once born the lamprey will return to the oceans but salmon do this too. The lampreys have destroyed the commercial fishing of salmon in the great lakes. The algae do not spend a long lime as large vegetative state. Haploid filaments are capable of differentiating and creating gametes. + and filaments (not male and female yet). The two filaments can fuse to create a 2n zygote which undergoes meiosis to create spores (which are haploid). The plant can create gametes that are haploid or just regenerate asexually. In first plants the gametophyte is very dominant but as you move further along the gametophyte stage becomes contained in sporophyte stage.
