Class 12th Biology 2016 Set1 Outside Delhi Board Paper Solution
Name and explain the type of interaction that exists in mycorrhizae and between cattle egret and cattle.
Mycorrhizae are associations between fungi and the roots of higher plants. The type of interaction that exists in mycorrhizae is mutualism in which both fungi and plants – are dependent on each other. Fungi absorb and transport essential nutrients to the plants and in turn plants provide the fungi with other energy carbohydrates.
The interaction that exist between cattle egret and cattle is known as commensalism. In this type of interaction, one specie is benefitted whereas the other is neither benefitted nor harmed. The cattle egrets (bird) always forage close to where the cattle are grazing because the cattle, as they move, stir up and flush out from the vegetation insects that otherwise might be difficult for the egrets to find and catch. Thus, the cattle is neither benefitted nor harmed but the egret is benefitted.
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