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Masses of bacteria with fungal filaments in aeration tanks are called:

AFronds
BFilms
CFibres
DFlocs
Answer & Solution
Correct answer: D. Flocs
1. The microbes grow into mesh like structures. 2. These consume the organic matter in the effluent. 3. They are called flocs. _Source: NCERT Class 12 Biology, Chapter 10, Microbes in Human Welfare._
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