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8.Microbes in Human Welfare
normal
Cochineal insect has been used in checking the wild growth of
A
Opuntia
B
Eichhornia
C
Aphids
D
Screw worm
(AIPMT-1996)
Solution
(a)In India and Australia, prodigious spread of prickly pear $(opuntia) $ was controlled by introduction of cochineal insects $(Cactoblastis cactorum).$
Standard 12
Biology