Match List I with List II and select the correct answer using the code given below : List I [Product] A) Opium B) Hing C) Rubber D) Quinine List II [Source] a) Bark b) Root c) Fruit d) Stem

The correct answer is B: A-c, B-b, C-d, D-a.

• Opium (A-c, fruit): Opium is the dried latex collected by incising the unripe capsule (fruit) of the poppy, Papaver somniferum.
• Hing (B-b, root): Asafoetida is an oleo-gum resin obtained from the root and rhizome of Ferula species, mainly from Iran and Afghanistan.
• Rubber (C-d, stem): Natural rubber is the latex tapped from the trunk of Hevea brasiliensis. Since the latex comes from the stem, the key treats the source as stem.
• Quinine (D-a, bark): Quinine is an alkaloid extracted from the bark of the Cinchona tree.

The core concept is plant parts as sources of economic products. This links to the Indian economy and to the Mains topic of plantation crops and forest produce, including the Cinchona cultivation history in the Nilgiris and the Hevea plantations in Kerala and the Northeast.

Trap: Candidates often assign rubber to bark because rubber is tapped from the bark of the tree. Quinine is the bark product, so the two get swapped. Remember that the question is asking about the part of the plant the product is taken from, and for rubber the answer here is stem.