Download - Algae Simple Eukaryotes 1
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Prokaryotes, Eukaryotic Algae, and ProtozoansProkaryotes
organisms without a cell nucleus (= karyon), or any other membrane-bound organelles. (Most are unicellular, but some prokaryotes are multicellular)
Eukaryotes organisms whose cells are organized into
complex structures by internal membranes and a cytoskeleton
The most characteristic membrane bound structure is the nucleus
Can be multi- or unicellular
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Domain (Eu)Bacteria
Clade Cyanobacteria Photosynthetic blue-greens
Important Examples: Nostoc
Unicellular, beaded strands Able to fix nitrogen (important nutrient competitor)
Oscillatoria Very common locally Filamentous strands of rectangular cells
Gloeocapsa Very small colonies of 2 4 cells in gelatinous sheath
Nostoc. Pointer indicates heterocyst cell for N-fixation.
Oscillatoria. Good view of rectangular cells.
Gloeocapsa colonies
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Domain (Eu)Bacteria
Clade Proteobacteria Aquaspirillum
One of the largest bacteria, though its difficult to find under high-power using a compound microscope
Spiral-shaped (hence name)
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Domain Eukarya
Clade [Kingdom] Plantae Clade (Phylum) Chlorophyta green algae
Spirogyra Spiral-shaped chloroplasts
Zygnema Star-shaped chloroplasts
EndosymbioticCyanobacteria
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Domain Eukarya
Clade [Kingdom] Plantae Clade (Phylum) Chlorophyta green algae Desmids
Composed of two half-cells that are mirror images.
MicrasteriasClosterium
Cosmarium
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Domain Eukarya
Clade Stramenopila Clade (Phylum) Chrysophyta Golden-Brown Algae
Often flagellated, form colonies Synura
Diatoms Cell walls composed of silica Navicula Cyclotella
Synura. Free-living (right) & colony (below)
Navicula.
Cyclotella.
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Domain Eukarya
Clade Alveolata Clade (Phylum) Dinoflagellata
Flagellated use whip-like tail for feeding, locomotion Dinos spin or move in small circles
Red/brown color Can be photosynthetic or predatory plate of armor covering gives them an unusual appearance Give rise to red tides when in large numbers
Peridinium
Red tide!
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Domain Eukarya
Clade (Phylum) Ciliata Characterized by their cilia hair-like projections used for feeding or
locomotion Paramecium
Engulf prey with their oral groove gives them their spiral-like shape Some species have photosynthetic symbionts, but Paramecium themselves are predators
Euplotes Have spike-like modified cilia Wicked predators
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Domain Eukarya
Clade Euglenozoa Have superior flagella for locomotion and feeding
Can create water vortexes for filter-currents Some are photosynthetic Red eye spot can detect light for directionality
Euglena
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Domain Eukarya
Clade Amoebozoa Lack an outer body wall; move by extending their body cytoplasm (these
projections = pseudopodia) Pseudopodia caused by a chain reaction of actin proteins expanding &
contracting (they feed like this, too!) Difflugia
Protects its fragile body by creating a shell of sand & detritus
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Domain Eukarya
Clade Rhizaria Thread-lobed amoebas Actinopoda include Heliozoans (sun animals) that have threads of
pseudopodia extending through their silica/calcium carbonate shells Actinosphaerium
Slide Number 1Slide Number 2Domain (Eu)BacteriaDomain (Eu)BacteriaDomain EukaryaDomain EukaryaDomain EukaryaDomain EukaryaDomain EukaryaDomain EukaryaDomain EukaryaDomain Eukarya