Ethanol is produced commercially using
AAspergillus niger
BAcetobacter aceti
CStreptococcus species
DSaccharomyces cerevisiae
Answer & Solution
Correct answer: D. Saccharomyces cerevisiae
1. Yeast ferments sugars to alcohol.
2. Saccharomyces cerevisiae is used for the commercial production of ethanol.
3. The same yeast is the one used to leaven bread dough.
4. The bacteria listed produce acids or streptokinase, not ethanol.
_Source: NCERT Class 12 Biology Ch8 'Microbes in Human Welfare'_
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