The most abundant prokaryotes helpful to human in making curd from milk and in production of antibiotics are the ones categorized as:

1. Cyanobacteria 2. Archaebacteria
3. Chemosynthetic autotrophs 4. Heterotrophic bacteria
Subtopic:  Eubacteria |
 77%
Level 2: 60%+
AIPMT - 2012
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