Which of the following is used as bio-insecticide?

Bacillus polymyxa

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Cylindrospermum licheniforme

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Phytophthora palmivora

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Chrysanthemum cinerarifolium

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Solution

The correct option is D Chrysanthemum cinerarifolium
Chrysanthemum cinerarifolium is parennial plant that can be used as bioinsecticide. The dried flower buds of this plant is the source of the insecticide 'Pyrethrum'.

Bacillus polymyxa is a bacterium which occurs in association with certain plants to synthesize several different antibiotic substances.
While Cylindrospermum licheniforme is a cyanobacteria and Phytophthora palmivora is a disease causing microbe which causes bud-rot of palms.

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Which one of the following is used as an insecticide?

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