Question

The plant pesticide pyrethrum is obtained from

• A. Cinchona officinalis
• B. Chrysanthemum cinerariifolium
• C. Chrysophyllum cainito
• D. Cannabis sativa
• E. Cicer arietinum

Answer 1

The correct option is B Chrysanthemum cinerariifolium

Pyrethrum is a genus of plants which are cultivated as ornamentals. It is a natural insecticide made from the dried flower heads of Chrysanthemum cinerariifolium. Pyrethroids are synthetic insecticides derived from natural Pyrethrum (pyrethrins). The compound enhances the effect of toxicity to insects. These compounds target the nervous system of the insects. They are commonly used as insect repellants.

Thus, the correct answer is option B.