1.

Observe the given diagram and answer the following questions:(1) In which host stage II is completed?(2) What happens in step 1 and step 2?(3) Describe the events in step 3.(4) In which host stage I is completed?

Answer»

(1) Stage II is completed in human.

(2) Humans are infected at step 1 when mosquito bites human and larvae enter blood stream. In step 2 adult Wuchereria worms are formed in lymphatics.

(3) Mosquito carries the blood as it bites the human in step 4 and ingests microfilariae in human blood. Later the microfilariae start growing in the midgut of mosquito.

(4) Stage I is completed in mosquito.



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