8. What is the ecological principle behind the biological control method of managing with pest insects?
An orchid growing on the branch of a mango tree is an epiphyte. Epiphytes are
plants growing on other plants which however, do not derive nutrition from them.
Therefore, the relationship between a mango tree and an orchid is an example of
commensalisms, where one species gets benefited while the other remains
unaffected. In the above interaction, the orchid is benefited as it gets support while
the mango tree remains unaffected.
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