Match List-I with List-II
| List-I | List-II |
|---|---|
| Microorganisms | Applications |
| (A) Bacillus thuringiensis | (I) Produces insulin chains |
| (B) Meloidogyne incognitia | (II) Produces toxins which provide resistance to insects in plants |
| (C) Agrobacterium | (III) Infects the roots of tobacco plants |
| (D) E. coli | (IV) Introduces new gene into the host plant |
Choose the correct answer from the options given below:
Answer & explanation
Correct answer: option 1
The correct answer is Option (1) → (A) - (II), (B) - (III), (C) - (IV), (D) - (I)
(A) Bacillus thuringiensis — this matches (II) Produces toxins which provide resistance to insects in plants. Its cry genes make the Bt toxin. When the genes are put in a crop, the plant becomes resistant to insect pests.
(B) Meloidogyne incognitia — this matches (III) Infects the roots of tobacco plants. This nematode attacks the roots of tobacco and lowers the yield. It is controlled by RNA interference.
(C) Agrobacterium — this matches (IV) Introduces new gene into the host plant. It is used as a vector. It can carry a gene into a plant cell.
(D) E. coli — this matches (I) Produces insulin chains. Human insulin chains A and B were made in separate E. coli cultures and then joined.