Question

A type of population interaction between two populations of two different species where neither of them are benefitted is called ______.

• A. predation
• B. parasitism
• C. commensalism
• D. competition

Answer 1

The correct option is D competition

Competition is a type of population interaction in which the survival of one species is significantly lower in the presence of another species. It occurs when more than one species compete for the same resources that are limiting and has a negative effect on both the interacting species (-/- interaction). For example, in some shallow South American lakes, visiting flamingoes and resident fishes compete for zooplanktons which is their common food.

Predation is a type of population interaction where organisms belonging to one species (the predator), captures, kills and eats organisms belonging to another species (its prey). One organism is harmed while the other one is benefitted in this type of population interaction. E.g: Tiger preys on deer

Parasitism is a type of population interaction between two living species in which one organism (parasite) is benefited at the expense of the other (host). For example, ticks (parasites) on dogs (host).

Commensalism is a type of population interaction in which one species benefits and the other is neither harmed nor benefited. For example, an orchid growing as an epiphyte on the branch of a mango tree.