Intro to Algae Terms Flashcards

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1
Q

What does “Algos” mean?

A

Latin for “seaweed”

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2
Q

What does “Phycos” mean?

A

Greek for “seaweed”

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3
Q

What are the 4 criteria for defining algal divisions?

A

Pigmentation, Flagellation, Storage Products, and Cell Wall characteristics.

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4
Q

How many types of Chlorophyll are there? What are their names?

A

There is chl. a, b, c, and d.

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5
Q

Where is chl. a usually found?

A

In all algae and plants.

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6
Q

Where is chl. b usually found?

A

In green algae, Euglenoids, and plants.

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7
Q

Where is chl. c usually found?

A

In yellow-green and brown divisions.

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8
Q

Where is chl. d usually found?

A

In red algae.

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9
Q

What are carotenoids?

A

They’re accessory pigments.

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10
Q

What are the two pigments under carotenoids?

A

Carotenes (yellow-orange pigments, oxygen free hydrocarbons) and xanthophylls (yellow/orange/brown/red, oxygenated derivatives and important in diatoms).

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11
Q

What are the two types of phycobilins?

A

Phycoerythrin (red) and phycocyanin (blue).

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12
Q

Are phycobilins found in algae other than red algae and cyanobacteria?

A

No; they are water soluble so they cannot exist in membranes apart from red algae/cyanobacteria/and any descendants.

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13
Q

What are the four words to describe flagellation in algae?

A

Simple (Non tapering whip), Acronematic (Smooth tapered whip), Pleyronematic (Lateral flimmers), Haptonema (coiled and attaching).

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14
Q

What are the four types of storage products?

A

Oil, starch, glycogean, or alcohols.

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15
Q

What do you need to look out for in algae cell walls?

A

Presents, chemistry, structure (ex: petroglycean in cell walls or starch in cell walls, etc).

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16
Q

How many divisions of algae are there?

A

Four.

17
Q

What’s an easy way to tell these divisions apart?

A

Each division (except Div. 1) adds a MEMBRANE around their CHLOROPLAST.

18
Q

What group(s) fall under Div. 1?

A

Cyanobacteria

19
Q

What group(s) fall under Div. 2?

A

Glaucophyta (diverges from Reds and Greens), Rhodophyta (Red algae), Chlorophyta (Green algae)

20
Q

What group(s) fall under Div. 3?

A

Euglenophyta and Dinophyta

21
Q

What group(s) fall under Div. 4?

A

Crytophyta, Haptophyta, Heterokontophyta.

22
Q

How are algae different from byrophytes?

A

Has no spore dependence, unicellular, and gametangia.

23
Q

How are algae different from bacteria?

A

Algae are usually eukaryotic (except Cyanobacteria), contains chl. b.

24
Q

How are algae different from animals?

A

Typically autotrophic and some have cell walls.

25
Q

Why is algae important to the Earth’s atmosphere?

A

Helped create the atmosphere by absorbing CO2 and releasing oxygen, eventually allowing higher life to evolve.

26
Q

Does Div. 1 algae have chloroplasts?

A

No; cyanobacteria have thylakoids but no proper chloroplast (due to being primitive).