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  • Discuss the various types of positive interactions between species.

Discuss the various types of positive interactions between species.

 

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Following are the positive interactions between species:

(a) Mutualism: This is a relationship between two organisms in which both organisms are benefitted. Lichen is a particularly good example of mutualism. Lichen is an association of fungi and algae. The fungal part attaches to the substratum and gets water and minerals for the algal part. The algal part carries out photosynthesis and provides food to the fungal part.

(b) Commensalism: This is a relationship between two organisms in which one organism benefits, while another organism is neither a gain nor a loss. Egrets keep on sitting on the backs of herbivore animals, like buffalo, cow, etc. When the cattle forage for grass, the insects under the grass fly away haphazardly. This gives a chance to the egrets to feed on insects. Without the help of cattle, it will be difficult for egrets to find insects in the grass. In this relationship, there is no benefit to the cattle. 

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