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8/8/2019 BOT 3: Green Algae
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Green Algae
Division Euglenophyta (Euglena)
Division Chlorophyta
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Euglena
With plant-like and animal-like characteristics
(plant-like² photosynthetic; animal-like² motileand facultative heterotrophic)
Stored food: paramylon
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With cellulosic cell wall
Photoautotrophic
Stored food: starch
Can be divided into 3 classes(Ulvophyceae, Chlorophyceae, and
Charophyceae) based on: their habitat
and cytokinesis
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Class Ulvophyceae
Marine water as habitat
Forms phycoplast during cell division
Class Chlorophyceae
Fresh water as habitat
Forms phycoplast during cell division
Class Charophyceae
Fresh water as habitat
Forms phr agmoplast (cell plate) during cell
divisiontjmedinabot3'08
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1900s by Blackman and West
Volvocine line
Tetrasporine line
Siphonaceous line
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Marine organisms
During cytokinesis, there is aphycoplast formation
U lva, Valonia/ Ventr icar ia, Acetabular ia, Cod ium, Caulerpa,
Halimed a, and Cladophor a
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U lva
Sea lettuce (edible)
thallus-forming (blade)
From a tetrasporine evolutionary line
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Ventr icar ia/ Valonia
From a siphonaceous line
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Acetabular ia (mermaid·s cup)
from siphonaceous line
Rhizoid
Stalk
Cap
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Cod ium
From a siphonaceous line
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Caulerpa
From a siphonaceous line
Blade
Stolon
Rhizoid
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Halimed a
From a siphonaceous line
Has calcium carbonate deposits
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Cladophor a
From a tetrasporine line
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Freshwater organisms
During cytokinesis, there is aphycoplast formation
Chlamydomonas, V olv ox ,
Oedo gonium, and Chlor ella
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Chlamydomonas
from the volvocine line
With a cup-shaped chloroplast
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V olv ox
From a volvocine line
Forms daughter colonies; gonidia
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Oedo gonium
From a tetrasporine line
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Chlor ella
From a siphonaceous line
high in protein; with growth factors
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Freshwater organisms
During cytokinesis, there is aphragmoplast formation (cell plate
formation)
Cosmar ium, Closter ium, S piro gyr a,
and Char a
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Cosmar ium
From a tetrasporine line
A desmid
With two, mostly ornamented semi-cells that arejoined by a narrow connection called the
isthmus. This is where the spherical nucleus is
situated. Each semi-cell houses a large, often
folded chloroplast.
Semi cell
Isthmus
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Closter ium
From a tetrasporine line
A desmid
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S piro gyr a
From a tetrasporine line
Performs conjugation and produces zygospores
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Char a
From a tetrasporine line
Closely related to higher plantsLaterals
Nodes
nucule
globule
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