Algae
Which of the following algal divisions is characterized by possession of chlorophylls A and B, starch as the energy storage material, cellulosic cell walls and live in freshwater and marine habitats?

Chrysophyta
Chlorophyta
Pyrrophyta
Phaeophyta

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

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

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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 exactly or approximately equal to members of the Phaeophyta
members of the Rhodophyta is greater than members of the Phaeophyta

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