Question:medium
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 2. Cyclops Infestation C. Relapsing Fever 3. Sarcoptes D. Kyasanur Forest Disease (KFD) 4. Hard Tick
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 | 2. Cyclops Infestation |
| C. Relapsing Fever | 3. Sarcoptes |
| D. Kyasanur Forest Disease (KFD) | 4. Hard Tick |
Show Hint
Scabies is caused directly by a mite, not spread by a biting vector; match the rest to their true insect hosts.
Updated On: Jul 7, 2026
A B C D 3 2 1 4 A B C D 4 1 2 3 A B C D 3 1 2 4 A B C D 4 2 1 3
Show Solution
The Correct Option is A
Solution and Explanation
Step 1: Sort the diseases into two groups first.
Three of these four spread through a true arthropod carrier. One of them, scabies, is different: its cause lives right on the skin with no carrier insect needed. Spotting this early makes the matching easier.
Step 2: Place Scabies (A).
The mite Sarcoptes scabiei digs its own tunnels into the skin and causes scabies directly. There is no vector step here, so A goes with item 3, Sarcoptes.
Step 3: Place Fish Tapeworm (B).
The fish tapeworm's eggs hatch in water and the first larval stage infects a tiny water crustacean called Cyclops. Fish eat infected Cyclops, and people get infected by eating that fish raw or undercooked. So B pairs with item 2, Cyclops Infestation.
Step 4: Place Relapsing Fever (C).
Relapsing fever has two patterns depending on the carrier. Louse borne relapsing fever spreads through crushed lice, while tick borne relapsing fever spreads through the bite of a soft tick of the Ornithodoros genus. This question is pointing to the tick borne form, so C pairs with item 1, Soft Tick.
Step 5: Place Kyasanur Forest Disease (D).
KFD is a well known Indian viral fever, first reported from the Kyasanur forest area of Karnataka, and it spreads through the bite of hard ticks, mainly Haemaphysalis spinigera. So D pairs with item 4, Hard Tick.
Step 6: Line up the full set and check the codes.
The full match is A-3, B-2, C-1, D-4. Scanning the four given codes, this exact order appears only under code (a); the others mix up at least one pair, such as swapping A and D between items 3 and 4.
Step 7: Final Answer:
\[ \boxed{A\text{-}3,\ B\text{-}2,\ C\text{-}1,\ D\text{-}4} \]
Three of these four spread through a true arthropod carrier. One of them, scabies, is different: its cause lives right on the skin with no carrier insect needed. Spotting this early makes the matching easier.
Step 2: Place Scabies (A).
The mite Sarcoptes scabiei digs its own tunnels into the skin and causes scabies directly. There is no vector step here, so A goes with item 3, Sarcoptes.
Step 3: Place Fish Tapeworm (B).
The fish tapeworm's eggs hatch in water and the first larval stage infects a tiny water crustacean called Cyclops. Fish eat infected Cyclops, and people get infected by eating that fish raw or undercooked. So B pairs with item 2, Cyclops Infestation.
Step 4: Place Relapsing Fever (C).
Relapsing fever has two patterns depending on the carrier. Louse borne relapsing fever spreads through crushed lice, while tick borne relapsing fever spreads through the bite of a soft tick of the Ornithodoros genus. This question is pointing to the tick borne form, so C pairs with item 1, Soft Tick.
Step 5: Place Kyasanur Forest Disease (D).
KFD is a well known Indian viral fever, first reported from the Kyasanur forest area of Karnataka, and it spreads through the bite of hard ticks, mainly Haemaphysalis spinigera. So D pairs with item 4, Hard Tick.
Step 6: Line up the full set and check the codes.
The full match is A-3, B-2, C-1, D-4. Scanning the four given codes, this exact order appears only under code (a); the others mix up at least one pair, such as swapping A and D between items 3 and 4.
Step 7: Final Answer:
\[ \boxed{A\text{-}3,\ B\text{-}2,\ C\text{-}1,\ D\text{-}4} \]
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