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प्रश्न
Name and explain the type of interaction that exists in mycorrhizae and between cattle egret and cattle.
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उत्तर
Mycorrhizae are associations between fungi and the roots of higher plants. It is an example of mutualism in which both fungi and plants are dependent on each other for nutritional needs. Fungi absorb and transport essential nutrients to plants and in turn plants supply sugar molecules to the fungi.
The interaction which exists between cattle egret and cattle is known as commensalism. In this type of interaction, one species is benefited, whereas the other is neither benefited nor harmed. The cattle egret (bird) usually moves in proximity to the grazing cattle. As cattle move in the grass, they stir up the grass and flush out the insects which then become an easy target for the egret. In this way, the cattle is neither benefited nor harmed, but the egret is benefited.
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संबंधित प्रश्न
Organic farmers prefer the biological control of diseases and pests to the use of chemicals for the same purpose. Justify
Give the biological name of the following:
The fungus that is being developed as a bio-control agent.
What is mycorrhiza?
Which of the following is the INCORRECT statement with respect to biocontrol agents?
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?
Explain how Bacillus thuringiensis acts as a bio-control agent.
Which insect biocontrol agent is specifically useful for eliminating aphids?
Which fungal mycoherbicide is used to control most weeds?
Why are baculoviruses described as 'species-specific' biocontrol agents?
