Mutualism, Commensalism, and Parasitism


Symbiosis is any relationship in which two species live closely together.

The 3 kinds of Symbiosis is:

1. Mutualism

2. Commensalism

3. Parasitism


Mutualism is when both species benefit from the relationship.

An example is:

An oxpecker and a zebra or rhino. Oxpeckers land on the zebra or rhino and eat ticks and other parasites that live on their skin. The oxpecker gets food and the beats get pest control. Also, when there is danger the oxpeckers fly upward and scream a warning which helps the birds partner.

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Commensalism is when one member benefits and the other is neither helped nor harmed because of the relationship.

An example is:

One popular example is that of cows and the cattle egret. The egret follow the cows around and eat the insects that the hide under the vegetation which get stirred up as the cows move around and eat the grass.

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Parasitism is when one organism benefits at the expense of another organism in the relationship.

An example is:

A few examples of parasites are tapeworms, fleas, and barnacles. Tapeworms are segmented flatworms that attach themselves to the insides of the intestines of animals such as cows, pigs, and humans. They get food by eating the host's partly digested food, depriving the host of nutrients. Fleas harm their hosts, such as dogs, by biting their skin, sucking their blood, and causing them to itch. The fleas, in turn, get food and a warm home. Barnacles, which live on the bodies of whales, do not seriously harm their hosts, but they do itch and are annoying.

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