Question

Houseflies and mosquitoes have become resistant to the
A) BHC
B) Aldrin
C) DDT
D) Malathion

Answer 1

ANSWER
............


Houseflies and mosquitoes have become resistant to the BHC

Answer 2

Houseflies and mosquitoes have become resistant to the chemical DDT( Dichloro, diphenyl trichloroethane).

On the initial usage of DDT, the population of mosquitoes and houseflies declined rapidly.

After that, the mosquitoes and houseflies became resistant to the attack of DDT.

This was possible due to natural selection. Most mosquitoes started becoming resistant in a shorter span of time rather than years.

Hence, the correct is (C) DDT.