A) Synthetic origin
B) Plant origin
C) a and b both
D) Animal origin
Correct Answer: B
Solution :
They are synthetic derivatives of pyrethrum having broad spectrum effect, pyrethrum is naturally got from inflorescence of chrysanthemum species like C. marshalli, C. cinerarifolium and C. Coccineum.
You need to login to perform this action.
You will be redirected in
3 sec
