Question

Match List I (Disease) with List II (Vector) and select the correct answer using the codes given below the lists.

List I (Disease)	List II (Vector)
A. Scabies	1. Soft tick
B. Fish tapeworm infestation	2. Cyclops
C. Relapsing fever	3. Sarcoptes
D. Kyasanur Forest disease	4. Hard tick

• A. A-3, B-2, C-1, D-4
• B. A-4, B-1, C-2, D-3
• C. A-3, B-1, C-2, D-4
• D. A-4, B-2, C-1, D-3

Hint:

Think of each disease's actual biological carrier: a mite, a water flea, a soft tick, or a hard tick.

Answer 1

The Correct Option is A

This question tests knowledge of the vectors and intermediate hosts linked to four different diseases. Let's build each pair one at a time.

1. Scabies: caused directly by the itch mite Sarcoptes scabiei burrowing into the skin, so the mite itself is the agent to match here, giving Scabies with Sarcoptes.
2. Fish tapeworm infestation: the larva of Diphyllobothrium latum first develops inside a tiny crustacean called Cyclops before moving on to fish, so this disease pairs with Cyclops.
3. Relapsing fever: the tick borne form of this Borrelia infection is carried by the soft tick Ornithodoros, giving the pair Relapsing fever with Soft tick.
4. Kyasanur Forest disease: this viral fever seen in forest workers spreads through the bite of the hard tick Haemaphysalis spinigera, giving the pair Kyasanur Forest disease with Hard tick.

Putting all four pairs together gives A-3, B-2, C-1, D-4, which matches the first coded option exactly.

Let's summarize:

• Scabies: Sarcoptes (the mite is the agent itself)
• Fish tapeworm: Cyclops (first intermediate host)
• Relapsing fever: Soft tick (Ornithodoros)
• Kyasanur Forest disease: Hard tick (Haemaphysalis)

So the correct code is A-3, B-2, C-1, D-4.