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Cantharidin is a useful substance, produced by:

  • A.cochineal insect
  • B.giantfly
  • C.blister beetle
  • D.lac insect

Answer: C

Cantharidin is produced by the blister beetle (family Meloidae). It is a toxic compound that blisters skin and is used in small doses as a medicine to remove warts.

The cochineal insect gives carmine dye, the giant fly is not a source of it, and the lac insect gives lac.

Cantharidin is made by blister beetles and by some related beetles. The substance blisters the skin, which gives the beetle its name, and it has been used in medicine for warts.

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