MCQ
The plant pesticide pyrethrum is obtained from:
- ACinchona officinalis
- BChrysanthemum cinerariifolium
- CChrysophyllum cainito
- DCannabis sativa
✓
Answer
- Chrysanthemum cinerariifolium
Explanation:
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.
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