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Q118
(CDS-II/2026)
Science & Technology › Basic Science (Physics, Chemistry, Biology)
Which one of the following is NOT a biocontrol agent ?
Result
Your answer:
—
·
Correct:
D
Explanation
Biocontrol refers to the use of biological methods for controlling plant diseases and pests, serving as an eco-friendly alternative to chemical pesticides. Aphids are not biocontrol agents; they are actually common plant pests that suck sap from plants, often causing significant agricultural damage. The other options are recognized biocontrol agents:
- Bacillus thuringiensis: A bacterium used to control insect pests, particularly butterfly caterpillars.
- Ladybird beetle: A predatory insect used to naturally control populations of aphids and scale insects.
- Trichoderma: A genus of free-living fungi common in root ecosystems that acts as a bio-fungicide against several soil-borne plant pathogens.
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