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प्रश्न
Given below is a list of six micro-organisms. State their usefulness to humans.
- Nucleopolyhedrovirus
- Saccharomyces cerevisiae
- Monascus purpureus
- Trichoderma polysporum
- Penicillium notatum
- Propionibacterium sharmanii
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उत्तर
| Micro-Organism | Usefulness to Humans | |
| (a) | Nucleopolyhedrovirus |
|
| (b) | Saccharomyces cerevisiae |
|
| (c) | Monascus purpureus | Statins produced by it work as blood cholesterol-lowering agents. |
| (d) | Trichoderma polysporum | It produces cyclosporin A, which works as an immunosuppressant. |
| (e) | Penicillium notatum | It is a source of penicillin, an antibiotic. |
| (f) | Propionibacterium shermanii | It helps in the ripening of Swiss cheese. It is also responsible for the appearance of large holes in the cheese, as it produces high amounts of carbon dioxide. |
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संबंधित प्रश्न
Name a genus of baculovirus.
Name and explain the type of interaction that exists in mycorrhizae and between cattle egret and cattle.
Name the bioactive molecules produced by Trichoderma polysporum and Monascus purpureus.
How do mycorrhizae act as biofertilizers? Explain.
Explain the significant role of the genus Nucleopolyhedrovirus in an ecological sensitive area.
Give reasons for the following:
Nitrogenous fertilizers are not applied in fields where leguminous crops grow.
Give two examples of microbial pesticides with their hosts.
Give the biological name of the following:
The microbe used to control insect larvae growing on cotton.
Give the biological name of the following:
The fungus that is being developed as a bio-control agent.
What is mycorrhiza?
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 TRUE regarding Bacillus thuringiensis?
Which of the following can be killed using Nosema locustae?
Which of the following is the INCORRECT statement with respect to biocontrol agents?
How do microbes reduce the environmental degradation caused by chemicals?
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?
Why are the biocontrol agents preferred over the chemical pesticides?
Which one of the following is NOT a bioherbicide of bacterial origin?
