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Multicellular protist groups:
Chlorophyte
phycoplast

Chlamydomonas
Chlorella

Chlorophyceae
Ulvophyceae

Siphonous algae (Acetabularia)

Charophyceae

phragmoplast

Heterotrophs [ Slime molds and Oomycete]

• Presence of a phycoplast differentiates the Chlorophycea
• Ulvophycea is mostly marine
...

Role of nucleus and maternal imprinting and stored messenger RNA that
can play an important role in the initial development of the organism and
can have a significant impact
• Charophyceae - has a phragmoplast- plates that enable it to live on
land
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Bacteria would
aggregate at the spectrum that has the most oxygen evolution
(experiment)
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Starts with simple forms of the
organism
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This multicellularity becomes most
clear when you look at the chara groups
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when you see this growing in a real environment like ponds, don’t see the
filamentous portion in the water but you see the tops on the surface of
the pond trying to break out of the water
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Euglena is an excellent
example of a heterotroph
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Need protein
synthesis in order to survive
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• Within the heterotrophic divisions you have three groups that are still held

together known as Oomycota, Dictyosteliomycota and Myromycota
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What they look like
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The
Oomycota have the heterekont structure
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The
oogonium have egg cells present within it
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• A group that exists within the Oomyecete is known as Phytophthera
infestans
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They come originally
from South America (potatoes)
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The
deadly nightshade was used to kill people
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Phytophthera
infestins is a pathogen- the spores will swim along the surface of the
potato, germinate and enter the inside feeding on the nutrients on the
inside of the potato and will then exit and release its spores
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So it’s a cell
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The slime mold when starved behave in
a different kind of way
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That
starvation results in aggregation which in this case culminates in the
formation of a multicellular slug
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The amoeba donates its lives for the benefit of the slug
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Transformation
from a unicellular to a multicellular lifestyle has to do with a signalling
molecule such as cyclic AMP or folic acid to cause aggregation to
occur
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They usually grow in disgusting
places (plasmodial slime mold)
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Have
similarities to the fungal groups
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Chapter 14 - Mycota or fungal groups

Fungal Groups:
Chytridiomycota
Zygomycota
Ascomycota
Basidiomycota
Chytridiomycota
• Has chitin and has a motile form
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