Which of the following can be used as a bacteriological filter?

Gelidium

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Batrachospermum

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Oscillatoria

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Cymbella

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Solution

The correct option is C Cymbella
Cymbella is an algae belonging to Cymbellacea genera, which can be used as bacteriological filter as they have apical pore field i.e. specialized pores different in size and position. Gellidium is a thalloid red algae. Batrachospermum is a freshwater red algae. Oscillatoria is a filamentous cyanobacterium which reproduces by fragmentation.

Correct Answer is D.

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