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Unformatted text preview: ual cycle is haphazard, not biologically timed like diatoms Filamentous: Branched: Chladophora sp
two types of filamentous
Unbranched: Spirogyra sp
spiral filament going down the center, higher descriptive
along filament, you will see nuclei, starch granules.
will grow in length until something fragments it or it gets too bulky
Replication: it forms a cell by mating with another cell and it will break
off and form a new filament. (this is formed by sexual cycle).
NEW FILAMENT ONLY OCCURS THRU SEXUAL CYCLE
it can reproduce in length as exact copies, but new genetic individuals
only form through sexual reproduction. hallmark of cladophora: the cells are branched.
often when you see long wavy algae in a pond, it is millions of
cladophera lined up. each cell is an individual cell. If you cut
up the long cladophera strands, it would break them up and
each cell is capable of reproducing that way Colonial: Hydrodicton sp
organisms living together, not in a filament
they form little complexes and form a net like structure, net size varys
found in freshwater creeks with slow moving water, visible with naked eye
found associated with branches that they get hung...
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This document was uploaded on 02/25/2014 for the course MICROBIOLO 101 at San Jose State University .
- Fall '14