Multiple choice

Pyrethrum is obtained from

  1. inflorescence of chrysanthemum cinerarifolium

  2. roots of derris

  3. leaves of nicotiana

  4. none of these

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A Correct answer
Explanation

Pyrethrum is a plant (Chrysanthemum cinerariifolium). Pyrethrum is also the name of the crude extract obtained from flowers of this plant.