Algae 1

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Niamhue
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Last updated: October 29, 2025
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First submittedOctober 29, 2025
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1. Algae are plants
False
True
2. Algae have vascular systems
True
False
3. Cyanobacteria are eukaryotic or prokaryotic
Prokaryotic
Eukaryotic
4. Algae are all descended from a common ancestor
Algae is not a taxonomic term, algae are defined by ecological traits
True
False
5. Lichen dominates what % of surface area of the planet
4
10
8
6
6. Algae are classified under which kingdom (Whittaker 1969)
Protista
Monera
Plantae
Fungi
7. Membrane-bound organelles found within cyanobacteria are known as what
Archezoa
Chloroplasts
Monera
Thylakoids
8. Cyanobacteria produced the first oxygen rich environment how long ago
3.1 bya
2.7 bya
2.4 bya
2.1 bya
9. Lichen is a symbiote of algae and what
Plants
Fungi
Seaweed
Moss
10. DMS, a product when DMSP breaks down after being produced by algae, is known to affect what
DMS is the main cloud nucleation compound, more algae = more dms = more clouds = more rain
Land Fertility
Weather
Erosion
Ocean acidifcation
11. Plant-like protists, including algae, have been separated from animal-like protists. What is the name of the new kingdom for plant-like protists
Protozoa
Chromista
Archaea
Archezoa
12. Branched filaments of algae that grow on benthic substrates are known as
Phytoplankton
Peryphyton
Biofilms
13. Branched filaments of algae that are floating in water columns are known as
Phytoplankton
Peryphyton
Biofilms
14. According to Guiry (2012) How many algal species are there
36,000 - John & Maggs (1997), 10,000,000 - Norton et al, (1996) 42,000 - 175-500 made up
36,000
10,000,000
72,500 - 200,000
42,000 - 175,500
15. Which type of chlorophyll does cyanobacteria contain
chlorophyll a
chlorophyll b
chlorophyll c
chlorophyll a & b
chlorophyll a & c
chlorophyll b & c
chlorophyll a, b & c
16. Which type of chlorophyll do coccolithophores contain
chlorophyll a
chlorophyll b
chlorophyll c
chlorophyll a & b
chlorophyll a & c
chlorophyll b & c
chlorophyll a, b & c
17. Which type of chlorophyll do diatoms contain
chlorophyll a
chlorophyll b
chlorophyll c
chlorophyll a & b
chlorophyll a & c
chlorophyll b & c
chlorophyll a, b & c
18. Which type of chlorophyll do green algae contain
chlorophyll a
chlorophyll b
chlorophyll c
chlorophyll a & b
chlorophyll a & c
chlorophyll b & c
chlorophyll a, b & c
19. Chlorophyll a works best in which type of environment
Deep Sea
Shallow surface water
Semi-deep water (1> metre)
Continental shelf
20. Cyanobacteria are prokaryotic
True
False
21. Diatoms contribute to what % of global carbon fixation
20
40
60
80
22. Dinoflagellates are always multicellular
always unicellular
True
False
23. Coccolithophores are characterised by the 'plates' they contain, what are these 'plate made of
Calcium dioxide
Magnesium carbonate
Calcium carbonate
Calcium citrate
24. Brown algae gets its brown appearance through what pigment
Fucoxanthin
Chlorophyll
Phycoerythrin
25. Red algae gets its red appearance through what pigment
Fucoxanthin
Chlorophyll
Phycoerythrin
Beta Carotine
26. Which main type of algae is capable of permanently locking away carbon as bacteria cannot consume it
Diatoms
Coccolithophores
Red Algae
Dinoflagellates
27. Which of these three algae is typically are found the deepest
Green
Brown
Red
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