Question:
The larvae of Wuchereria bancrofti undergo ________ moultings before they become adults and settle in the lymphatic system of human.
The larvae of Wuchereria bancrofti undergo ________ moultings before they become adults and settle in the lymphatic system of human.
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Filarial worms: Two moults in humans → reach adult stage in lymph vessels.
Updated On: May 4, 2026
- one
- two
- three
- many
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Verified By Collegedunia
The Correct Option is B
Solution and Explanation
Concept:
Wuchereria bancrofti is a filarial parasite causing lymphatic filariasis (elephantiasis). It undergoes developmental stages in both mosquito and human host.
Step 1: Understand larval development.
• Infective larvae enter human body via mosquito bite
• Inside human host, larvae undergo moulting to become adults
Step 2: Number of moults. In human host, larvae undergo two moults:
• First moult → L3 to L4 stage
• Second moult → L4 to adult stage
Step 3: Conclusion. \[ \text{Larvae undergo two moults before becoming adults} \]
Wuchereria bancrofti is a filarial parasite causing lymphatic filariasis (elephantiasis). It undergoes developmental stages in both mosquito and human host.
Step 1: Understand larval development.
• Infective larvae enter human body via mosquito bite
• Inside human host, larvae undergo moulting to become adults
Step 2: Number of moults. In human host, larvae undergo two moults:
• First moult → L3 to L4 stage
• Second moult → L4 to adult stage
Step 3: Conclusion. \[ \text{Larvae undergo two moults before becoming adults} \]
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