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replicate a sexually, instead of a filament, it forms a net, when net fragaments, new cells form
from it Colonial: Volvox sp
reproducing unit is the not the cell
like honeybees: reproducing unit is the colony
within spheres, volvox is producing new spheres inside. can exist in several
generations. They have flagella, they are aquatic, movement looks like its
rotating because organism orient themselves in the colony with the flagella
sticking out; flagella movement is not random, they communicate somehow
to move; cooperative endeavor. Colonial: Ulva sp
every other generation must go sexual reproduction,
new genetic individuals are created basically seaweed. interesting because it has
two life stages individual goes under reduction division and produces mutiple
another mating type is also producing many gametes
gemetes are small single celled organisms that can fuse
together or they dont have too. when one mating type combines with
they form a zygote
then they produce a diploid colony, undergo
and the cycle goes on Desmids: Closterium sp/Microsterias sp
simple cells with bilateral symmetry constricted variety
filament in each direct with chloroplasts
starch granuals nucleus entire variety Microsterias sp Phaeophyta seaweed (Greek: phaios = dark)
Usually considered as member
of kingdom Plantae
=>kelps/Source of algin
dark alage: produce hold fasts that hold them to substrate, if placed in
blender, each piece is capable of starting a new indiv. , n...
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This document was uploaded on 02/25/2014 for the course MICROBIOLO 101 at San Jose State University .
- Fall '14