NEET 2012 Biology question

The most abundant prokaryotes helpful to humans in making curd from milk and in production of antibiotics are the ones categorised as

(1)Heterotrophic bacteriaCorrect
(2)Cyanobacteria
(3)Archaebacteria
(4)Chemosynthetic autotrophs

Answer: (1)

Solution

Curd is made by lactic acid bacteria (Lactobacillus), and antibiotics such as streptomycin are produced by actinomycetes (Streptomyces), which are bacteria. Both are heterotrophic bacteria, which are by far the most abundant prokaryotes and the most helpful to humans. Cyanobacteria are photosynthetic autotrophs

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Question ID VK-091202