Cochineal insects have proved very useful for control of
A
Cannabis
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B
Parthenium
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C
Opuntia
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D
Eicchornia
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Solution
The correct option is COpuntia
The cochineal is a scale insect in the suborder Sternorrhyncha, from which the natural dye carmine is derived. This insect lives on cacti in the genus Opuntia, feeding on plant moisture and nutrients. These insects are found on the paddles of prickly pear cacti, then are brushed off and dried. These insects are found on the paddles of prickly pear cacti, then are brushed off and dried. The insect produces carminic acid that deters predation by other insects. Therefore, the correct answer is option C.