Algae
Zooxanthellae are algal symbiont that live within coral reef animals. These algae belong to

rhodophyta
pyrrophyta
chlorophyta
chrysophyta

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Algae
The number of flagella produced by motile cells in

members of the Phaeophyta is greater than members of the Rhodophyta
None of these
members of the Rhodophyta is greater than members of the Phaeophyta
members of the Rhodophyta is exactly or approximately equal to members of the Phaeophyta

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Algae
Which of the following best describes the algae known as diatoms?

Cells have intricate shells of silicon dioxide with two halves
Cells contain carotenoid pigments as well as chlorophyll A and B
Cells have flagella and a light-detecting eye spot
Cells are encased in rigid walls composed of cellulose coated with silicon

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Algae
The number of members of the division Phaeophyta that live in freshwater habitats

is equal to the number of members of the division Chlorophyta that live in freshwater habitats
is greater than the number of members of the division Chloro-phyta that live in freshwater habitats
None of these
is lesser than the number of members of the division Chlorophyta that live in freshwater habitats

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