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Biology The Living World Previous Year Questions Single Correct MCQ
Published on: August 13, 2026

Match Column–I with Column–II and select the correct option using the codes given below

Column-I

Column-II

(A)

Citric acid

(I)

Trichoderma

(B)

Cyclosporin A

(II)

Clostridium

(C)

Statins

(III)

Aspergillus

(D)

Butyric acid

(IV)

Monascus

CODES :

A
I IV II III
B
III IV I II
C
III I II IV
D
III I IV II

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Text Solution

Verified by Experts
The correct answer is:
D

The microorganisms in Column–II are the commercial sources for the organic acids and bioactive molecules listed in Column–I:

Citric acid → (iii) Aspergillus niger: This filamentous fungus is the primary industrial producer of citric acid through fermentation.

Cyclosporin A → (i) Trichoderma polysporum: This fungus produces Cyclosporin A, a potent immunosuppressive agent used to prevent organ transplant rejection.

Statins → (iv) Monascus purpureus: Statins, used as blood-cholesterol lowering agents, are derived from this yeast.

Butyric acid → (ii) Clostridium butylicum: This bacterium is used for the commercial production of butyric acid.

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