Algae
Algae is a nonvalid taxinomic term that refers to

well developed cellular structure including a conducting system
None of these
eukaryotic organisms that have chlorophyll a and produce O2
Both (a) and (b)

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Algae
Number of flagella produced by motile cells in

None of these
members of the Oomycota is greater than members of the Phaeophyta
members of the phaeophyta is greater than members of the Oomycota
members of the Phaeophyta is approximately equal to members of the Oomycota

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Algae
The number of flagella produced by motile cells in

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

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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 contain carotenoid pigments as well as chlorophyll A and B
Cells have flagella and a light-detecting eye spot
Cells have intricate shells of silicon dioxide with two halves

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