Q.48 Zoology ⭐ 360° Option Elimination Active

NEET 2020 Zoology Question 48 Solution

Topic: Microbes in Human Welfare · Official NTA Booklet Code E1

Question

Match the following columns and select the correct option. Column - I Column - II (a) Clostridium (i) Cyclosporin-A butylicum (b) Trichoderma (ii) Butyric Acid polysporum (c) Monascus (iii) Citric Acid purpureus (d) Aspergillus niger (iv) Blood cholesterol lowering agent (a) (b) (c) (d)

(1)(iii) (iv) (ii) (i)
(2)(ii) (i) (iv) (iii)
(3)(i) (ii) (iv) (iii)
(4)(iv) (iii) (ii) (i)

✓

Verified Against NTA Final Answer Key

Option (2) : (a)-(ii), (b)-(i), (c)-(iv), (d)-(iii)

📚 Microbes in Human Welfare Easy

📋 Given Parameters & Problem Setup

Column I (Microbes) (a) Clostridium butylicum, (b) Trichoderma polysporum, (c) Monascus purpureus, (d) Aspergillus niger

Column II (Products) (i) Cyclosporin-A, (ii) Butyric Acid, (iii) Citric Acid, (iv) Blood cholesterol lowering agent

⚡

The 30-Second Exam Hall Shortcut: ⚡ "Clostridium = Butyric; Trichoderma = Cyclosporin-A; Monascus = Statin"

⏱️ 30 seconds

Clostridium butylicum produces Butyric acid (a->ii). Trichoderma polysporum yields immunosuppressive Cyclosporin-A (b->i). Monascus purpureus yeast yields statins (blood cholesterol lowering agent, c->iv). Aspergillus niger produces Citric acid (d->iii). Match gives Option (2) in 10 seconds!

1 Clostridium butylicum -> (ii) Butyric acid.

2 Trichoderma polysporum -> (i) Cyclosporin-A.

3 Monascus purpureus -> (iv) Blood cholesterol lowering agent (statins).

4 Aspergillus niger -> (iii) Citric acid.

5 Mapping: (a)-(ii), (b)-(i), (c)-(iv), (d)-(iii) -> Option 2.

🛡️

Why You Can 100% Trust This Shortcut: NCERT Biology · Microbes in Human Welfare (Microbes in Industrial Products)

📐

Step-by-Step Rigorous Workflow & Mathematical Proof

Step 1

Match Clostridium butylicum

Clostridium butylicum is a bacterium that produces butyric acid (organic acid) industrially. Thus, (a) matches (ii).

Step 2

Match Trichoderma polysporum

Trichoderma polysporum is a fungus that produces Cyclosporin A, an important bioactive molecule used as an immunosuppressive agent in organ-transplant patients. Thus, (b) matches (i).

Step 3

Match Monascus purpureus

Monascus purpureus is a yeast that produces statins, which act as competitive inhibitors of HMG-CoA reductase to lower blood cholesterol levels. Thus, (c) matches (iv).

Step 4

Match Aspergillus niger

Aspergillus niger is a fungus that produces citric acid industrially. Thus, (d) matches (iii).

⭐

360° Option Elimination Engine Key Feature

Diagnose every choice: Know exactly why the right option works and why distractors fail.

4-Option Deep Scan

1 A

✗ Incorrect

Verdict & Scientific Reason:

Incorrect; mispairs Clostridium with citric acid and Trichoderma with statins.

⚠️

Student Fallacy (Why candidates pick this trap): Swapping industrial microbes and their products.

2 B

✓ 100% Correct

Verdict & Scientific Reason:

Accurate pairing across all four industrial microbial products.

💡

Why this is airtight: None; canonical industrial microbiology pairing.

3 C

✗ Incorrect

Verdict & Scientific Reason:

Incorrect; Clostridium butylicum produces butyric acid, not Cyclosporin-A.

⚠️

Student Fallacy (Why candidates pick this trap): Flipping Clostridium and Trichoderma.

4 D

✗ Incorrect

Verdict & Scientific Reason:

Incorrect; completely jumbled assignments.

⚠️

Student Fallacy (Why candidates pick this trap): Guessing without verifying organic acid and bioactive molecule matching.

⚠️

NTA Trap Alert: Bioactive Molecules vs Organic Acids

Trichoderma polysporum = Cyclosporin A (immunosuppressant). Monascus purpureus = Statins (cholesterol lowering). Clostridium butylicum = Butyric acid.

🛡️ How to avoid the -1 mark: Clostridium "butylicum" has "butyric" right in its scientific name!

📖

Core NEET Syllabus Standard

Zoology · Microbes in Human Welfare Standard Benchmark

Core Scientific Principle Tested:

Syllabus Focus: Industrial Microbes and Their Bioactive / Organic Acid Products

✓ Core NEET UG Syllabus Anchor Syllabus & Academic Standards ↗

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NEET 2020 Zoology Question 48 Solution

Question

The 30-Second Exam Hall Shortcut: ⚡ "Clostridium = Butyric; Trichoderma = Cyclosporin-A; Monascus = Statin"

Step-by-Step Rigorous Workflow & Mathematical Proof

Match Clostridium butylicum

Match Trichoderma polysporum

Match Monascus purpureus

Match Aspergillus niger

360° Option Elimination Engine Key Feature

NTA Trap Alert: Bioactive Molecules vs Organic Acids

Core NEET Syllabus Standard

Ready to attempt under real exam pressure?

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