Algae
Algae is a nonvalid taxinomic term that refers to

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

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

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