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प्रश्न
Give an example of a bacterium, a fungus and an insect that are used as biocontrol agents.
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उत्तर
Examples of biocontrol agents are:
- Bacterium: Bacillus thuringiensis (used against insect pests and mosquito larvae).
- Fungus: Trichoderma (controls many plant diseases).
- Insect: Ladybird (control aphids) and dragonflies (control mosquitoes).
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संबंधित प्रश्न
With the help of a neat and labelled diagram explain VAM (vesicular arbuscular mycorrhizae).
Trichoderma konigi is a source of _______ enzyme.
(A) invertase
(B) lipase
(C) pectinase
(D) cellulase
How do organic farmers control pests?
How do mycorrhizae act as biofertilizers? Explain.
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
Mention one advantage and one disadvantage to a farmer who uses them.
What is VAM?
Give the biological name of the following:
The microbe used to control insect larvae growing on cotton.
Select the odd one from given herbicides.
______ are controlled by the microbial herbicide Phytophthora palmivora.
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 host for microbial pesticide Beauveria bassiana?
Which one of the following statements is WRONG in relation to transgenic Bt cotton plant?
The free-living fungus Trichoderma can be used for ______.
Match the items in Column ‘A’ and Column ‘B’ and choose correct answer.
| Column I | Column II |
| A. Lady bird | i. Methano bacterium |
| B. Mycorrhiza | ii. Trichoderma |
| C. Biological control | iii. Aphids |
| D. Biogas | iv. Glomus |
The correct answer is:
What for Nucleopolyhydro viruses are being used now a days?
How do microbes reduce the environmental degradation caused by chemicals?
Define bioherbicides.
