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Which of the following statements is cor...

Which of the following statements is correct with regard to biocontrol agents ?

A

Ladybird and dragoniflies are used to get rid of aphids and mosquitoes respectively.

B

Bacillus thuringiensis bacteria are used to control butterfly caterpillars

C

Trichoderma species are used to control several plant pathogens

D

All of these

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The correct Answer is:
D
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NCERT FINGERTIPS-MICROBES IN HUMAN WELFARE-Microbes In Human Welfare
  1. Bacillus thuringiensis (Bt) strains have been used for designing novel

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  2. Fill up the blanks by selecting the correct option. (i) Biogas is a ...

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  3. Which of the following statements is correct with regard to biocontrol...

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  4. Trichoderma harizianum has proved to be a useful microorganism for

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  5. Baculoviruses (Nucleopolyhedrobirus) do not show

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  6. Which of the following statements regarding baculoviruses as biocontro...

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  7. Integrated Pest Mangement (IPM) discourages the excessive use of

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  8. Which of the following is not used as a biopesticide ?

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  9. The reson that the chemical/synthetic fertilisers should be replaced b...

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  10. Organic farming does not include

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  11. Organic farming includes

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  12. Living organisms used to enrich the nutrient quality of the soil are c...

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  13. Biofertilisers are prganisms that enrich the nutrient quality of the s...

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  14. Biofertilisers are

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  15. Biofertilisers are the living orgaisms which

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  16. Unicellular symbiotic organisms improve yield of legumes by

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  17. Match column I with column II and select the correct answer from the g...

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  18. Which one of the following can be used as biofertiliser in cotton fiel...

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  19. The symbiotic association between fungi and roots of higher plants is ...

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  20. Which one of the following microorganisms forms symbiotic assocation w...

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