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Biology

30 July, 19:04

Which example illustrates commensalism and NOT mutualism?

A

Hippo dung is eaten by a large species of catfish native to African lakes. The catfish typically follow the hippo herds.

B

Cattle have protozoa living in their gut that digest cellulose. The cows are able to feed on grass, while the protozoa are sheltered inside the cow.

C

Oxpeckers remove parasitic fly larvae from the skin of buffalo. In exchange, they are protected from predatory cats, who will not challenge a buffalo.

D

Ants 'farm' aphid insects like cattle. Aphids suck the sap out of trees, which ants also feed on. In turn, the ants sting predators that attack the aphids.