Match List I with List II: List-I A. Genetically modified organism B. Thermostable DNA polymerase C. Ti plasmid D. pBR322 List-II (I) Agrobacterium tumefaciens (II) Bt cotton (III) Thermus aquaticus (IV) Escherichia coli Choose the correct answer from the options given below:
Answer: (A) A-II, B-III, C-I, D-IV. Answer: (1) A-II, B-III, C-I, D-IV Solution: A genetically modified organism — Bt cotton (II); thermostable DNA polymerase (Taq) — Thermus aquaticus (III); Ti plasmid — Agrobacterium tumefaciens (I); pBR322 — Escherichia coli cloning vector (IV).
- A.A-II, B-III, C-I, D-IV✓
- B.A-II, B-I, C-IV, D-III
- C.A-I, B-IV, C-III, D-II
- D.A-I, B-II, C-IV, D-III
Correct Answer
(A) A-II, B-III, C-I, D-IV
Solution & Explanation
Answer: (1) A-II, B-III, C-I, D-IV Solution: A genetically modified organism — Bt cotton (II); thermostable DNA polymerase (Taq) — Thermus aquaticus (III); Ti plasmid — Agrobacterium tumefaciens (I); pBR322 — Escherichia coli cloning vector (IV). Only option 1 maps every pair correctly: A-II, B-III, C-I, D-IV. NCERT grounds Taq in Thermus aquaticus, the Ti plasmid in Agrobacterium, and pBR322 as an E. coli cloning vector (Fig. 9.4); Bt cotton is the standard GMO example. NCERT Reference: Ch 9, p.169, line(s) 55 — "E. coli cloning vector pBR322"