Microbe used for biocontrol of pest butterfly caterpillars is
Correct answer: B. Bacillus thuringiensis
- A. Saccharomyces cerevisiae
- B. Bacillus thuringiensis
- C. Streptococcus sp
- D. Trichoderma sp
Explanation
Biopesticides are those biological agents that are used for the control of weeds, insects, and pathogens. The microorganisms used as biopesticides are viruses, bacteria, protozoa, fungi, and mites. Some of the biopesticides are being used at a commercial scale. The most important example is the soil bacterium, Bacillus thuringiensis (Bt). Spores of this bacterium produce the insecticidal cry protein. Therefore, spores of this bacterium kill larvae of insects which eat them.
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Ecosystems include biotic and abiotic components, food chains and webs, energy flow, nutrient cycles, populations and ecological relationships. Pollution and conservation cover air, water, soil and noise pollution, their effects on organisms, biodiversity loss, protected areas, sustainable resource use and methods for reducing environmental damage.
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