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प्रश्न
What is mycorrhiza?
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उत्तर
Mycorrhiza is a fungus. It forms symbiotic associations with the underground parts, like rhizomes and roots of higher plants occurring in thick, humid forests.
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संबंधित प्रश्न
Trichoderma konigi is a source of _______ enzyme.
(A) invertase
(B) lipase
(C) pectinase
(D) cellulase
How do organic farmers control pests?
State the medicinal value and the bioactive molecules produced by Streptococcus, Monascus and Trichoderma.
Explain the significant role of the genus Nucleopolyhedrovirus in an ecological sensitive area.
State the difference in organic farmers approach from that of conventional pest control methods.
Give two examples of microbial pesticides with their hosts.
Give an example of a bacterium, a fungus and an insect that are used as biocontrol agents.
How does the activity of each one of the following help in organic farming?
Mycorrhiza
Write a note on biocontrol agents.
Match the column A with B and rewrite correct pairs
| A | B | |
| I | Mycoherbicides | Cactoblastis |
| II | Bacterial herbicides | Alternaria |
| III | Insects as herbicides | Xanthomonas |
Which of the following is the INCORRECT statement with respect to biocontrol agents?
From the following which one is NOT a bacterial herbicide?
Which of the following is TRUE regarding Xanthomonas and Pseudomonas?
Farmers have reported over 50% higher yield of rice by using which of the following biofertilizers?
What for Nucleopolyhydro viruses are being used now a days?
Name any genetically modified crop.
A farmer grew 2 varieties of corn crops in fields A and B. He grew normal corn crops in field A and GM corn crops in field B. He observed corn borers attacked only in field A. To control it, spores of Bt were sprayed in field A.
- Name the gene in the spores responsible for the control of this pest.
- What effect will the spores of Bt have on the insect pest?
- How has field B developed resistance against this pest?
Protozoan like Nosema locustae is used for controlling the target pests like ______.
Which one of the following is NOT an action of biocontrol on a pest?
