Title: Unit 14 Quiz
Course: HRT 125 Plants and Society > Section: HRT 125 Plants and Society

Q: The algae _____.
- are photosynthetic
- are only in freshwater ecosystems
- can rarely be used as food
- never cause human poisoning
A: are photosynthetic

Q: Some algae reproduce only by cell division.
- True
- False
A: True

Q: The cyanobacteria are _____.
- are sometimes called blue-green algae
- usually are yellowish green
- contain chloroplasts that help with the green color
- are sometimes able to fix nitrogen (heterocyst) and thus help corn grow
A: are sometimes called blue-green algae

Q: Blue-green algae is a type of cyanobacteria that we use as a dietary supplement
- True
- False
A: True

Q: Dinoflagellates _____.
- have two flagella
- cause red tide
- can sparkle in the ocean at night
- all of the above
A: cause red tide

Q: Green algae or chlorophyta _____.
- can form a symbiotic relationship with fungi to make up funophyta
- can form large seaweeds
- are most abundant in salt water than fresh water
- are the organisms from which all green plants evolved
A: are the organisms from which all green plants evolved

Q: Red algae _____.
- are usually large multicellular and attached to rocks
- can be found as deep as 650 feet
- are used directly for food
- all of the above
A: all of the above

Q: Omega 3 oils are _____.
- not synthesized by fish
- pre-formed by certain algae
- part of the white matter in the human brain
- found in infant formula
A: pre-formed by certain algae

Q: Algae may help solve the malnutrition problems in developing countries
- True
- False
A: True

Q: Diatomaceous earth, a substance from diatoms, can be used for all of these EXCEPT _____.
- to kill garden pests
- to polish silver
- to filter wine
- to strengthen tires
A: to strengthen tires