Question

Which set is of benificial insects to man [CPMT 1972, 84]
A) Honey bee, lac insect, cochineal insect
B) Silk worm, honey bee, wasp
C) Honey bee, silk worm, cockroach
D) Sand fly, butterfly, honey bee

Answer 1

a is right option because all three are useful honeybee in production of honey cochineal in inducing polyploidy