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Algal Biology > Cyanobacteria Biodiversity (Genus) > Flashcards

Cyanobacteria Biodiversity (Genus) Flashcards

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1
Q

Dolichospermum CHARACTERISTICS

A

Microscopic, filamentous.

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2
Q

Dolichospermum COLOR

A

Dark green, dark brown. or pale blue green.

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3
Q

Dolichospermum MORPHOLOGY

A

Spherical/Oval/Barrel shaped cells, HAS heterocytes and akinetes, SHEATH with fine clear mucilage envelope, trichomes solitary or clustered.

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4
Q

Dolichospermum HABITATS

A

Freshwater lakes/ponds, planktic and rarely metaphytic.

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5
Q

Dolichospermum FUN FACT

A

Produces microcystin; creates algal blooms.

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6
Q

Gloeotrichia CHARACTERISTICS/COLORS

A

Olive green, yellow green, brown, dark blue, or blackish.

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7
Q

Gloeotrichia MORPHOLOGY

A

HAS heterocytes and akinetes, HAS aerotopes. Heteropolar trichomes w/ intercalary heterocytes, rarely false branches.

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8
Q

Gloeotrichia HABITATS

A

Freshwater ONLY, planktonic.

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9
Q

Gloeotrichia FUN FACT

A

Water manager, produces microcystin.

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10
Q

Aphanothece CHARACTERISTIC/COLORS

A

Yellow or green, stores glycogen, cell wall has thick layer of peptioglycogen.

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11
Q

Aphanothece MORPHOLOGY

A

No flagella, flatten cells, mucilage forms amorphous colonies.

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12
Q

Aphanothece HABITATS

A

Benthic in standing water, usually becomes floating mats.

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13
Q

Aphanothece FUN FACT

A

Considered sediment mats if formed in the bottom of waterbodies, forms toxic blooms.

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14
Q

Aphanizomenon CHARACTERISTICS/COLOR

A

Possibly has firm sheaths, pale blue green or blue green.

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15
Q

Aphanizomenon MORPHOLOGY

A

Straight & unbranched trichomes, HAS heterocytes (intercalary) & akinetes (between vegatative cells), HAS aerotropes.

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16
Q

Aphanizomenon HABITATS

A

Found in freshwater lakes.

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17
Q

Aphanizomenon FUN FACT

A

Contains neurotoxins, saxitoxin and neosaxitoxin.

18
Q

Nostoc CHARACTERISTICS/COLOR

A

Yellowish brown to pale/bright blue green or olive green. Stores glycogen.

19
Q

Nostoc MORPHOLOGY

A

No flagella. HAS heterocytes and akinetes. Membrane contains peptidoglycan, also rich in acid proteins and polysaccarides.

20
Q

Nostoc HABITATS

A

Marine, freshwater, and terrestrial. Can survive in polar and arid regions.

21
Q

Planktothrix CHARACTERISTICS/COLOR

A

Reddish pink. No flagella or cell wall.

22
Q

Planktothrix MORPHOLOGY

A

Unbranced, may form mucilaginous envelope under stressful conditions. NO heterocytes or akinetes.

23
Q

Planktothrix HABITATS

A

Benthic in freshwater lakes and reservoirs.

24
Q

Planktothrix FUN FACT

A

Also toxic.

25
Q

Anabaena CHARACTERISTICS/COLOR

A

Has cell wall, can fix nitrogen, and produces neurotoxin.

26
Q

Anabaena MORPHOLOGY

A

Straight/curved/coiled trichome, looks like a string of beads. HAS heterocyte (yellow green) & akinete.

27
Q

Anabaena HABITATS

A

Terrestrial and freshwater habitats.

28
Q

Anabaena FUN FACT

A

Full of toxins; blooms more common in warm water.

29
Q

Microcoleus CHARACTERISTICS/COLOR

A

No cell wall, blue green, stores glycogen.

30
Q

Microcoleus MORPHOLOGY

A

NO heterocytes & akinetes, colony of multiple trichomes sharing a common sheath. Also has necridia.

31
Q

Microcoleus HABITATS

A

Salt marshes, marine, lagoons, lakes, and terrestrial.

32
Q

Microcoleus FUN FACT

A

Adds stability to soil, produces toxins (microcystin and anatoxin), can switch between oxygenic and anaoxygenic photosynthesis.

33
Q

Cylindrospermum CHARACTERISTICS/COLOR

A

Pale blue green, thick cell walls w/ peptidoglycan, stores glycogen.

34
Q

Cylindrospermum MORPHOLOGY

A

HAS heterocytes & akinetes, filaments can be straight/coiled/solitary.

35
Q

Cylindrospermum HABITATS

A

Tropical species but found in US temperate lakes.

36
Q

Cylindrospermum FUN FACT

A

Produces cylindrospermopsin, forms blooms.

37
Q

Spirulina CHARACTERTISTICS/COLOR

A

Looks green to me chief, stores glycogen/polyglycan/polyphosphate/cyanophycin. Has aerotropes and cell wall.

38
Q

Spirulina MORPHOLOGY

A

Unbranched filaments with variable coils from tight to loose.

39
Q

Spirulina HABITATS

A

Freshwater lakes, mineral springs, and brackish waters.

40
Q

Spirulina FUN FACT

A

Very nutritious, found in many medicines and cosmetics. One of the first photosynthetic life forms to help create oxygen atmosphere.

Algal Biology (5 decks)

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