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Biology · 2026 · 3 marks
CBSE 2026 · Region 5 · Set 1 · Q25
Mention a product of human welfare obtained with the help of each one of the following: (a) Saccharomyces cerevisiae (b) Propionibacterium shermanni…
Mention a product of human welfare obtained with the help of each one of the following :
(a)
Saccharomyces cerevisiae
(b)
Propionibacterium shermanni
(c)
Aspergillus niger
(d)
Trichoderma polysporum
(e)
Acetobacter aceti
(f)
Streptococcus
Marking-scheme solution
(a)
Beverages / Ethanol / Bakery products / Bread
(b)
Swiss Cheese
(c)
Citric acid
(d)
Cyclosporin-A / Immunosuppressive agent
(e)
Acetic acid
(f)
Streptokinase / Clot buster enzyme
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CBSE Class 12 Biology past-paper question from the 2026 board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.