Question

Some species of hummingbirds have different shapes of beaks that evolved to allow them to drink from certain flowers. The flower species have evolved to produce nectar that is tasty for the hummingbirds. This example is a type of

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Cuckoos lay eggs in the nests of other birds. The cuckoo lays eggs identical to the eggs of the host species, so the other bird takes care of it. This is an example of

Answer 1

Mutualism and parasitism.

Step-by-step explanation:

The relationship between the hummingbird and the flower is one of mutualism. Mutualism is a biological relationship which is mutually beneficial to both parties. In this case, the hummingbird receives food while the flower gets pollinated, something that it is often unable to do itself.

On the other hand, the cuckoo is a parasite. Parasitism is a relationship in which one organism benefits at the cost of another organism. Often, cuckoo chicks grow to sizes much larger than the chicks of the host species. Because the parents unwittingly continue to feed the cuckoo chick, the chicks of the host species are often starved to death as a result. Some cuckoo chicks are even so extreme as to push the host chicks out of their nests.