Relationships

predation

A biological interaction where one organism hunts and feeds on another.

symbiosis

A close, long-lasting relationship interaction between two or more different species.

mutualism

A symbiotic relationship in which both organisms benefit.

parasitism

A symbiotic relationship in which one organism benefits and the other is harmed.

commensalism

A symbiotic relationship in which one organism benefits and the other is not affected

competition

An overpopulation of white-tailed deer in central Texas will most likely lead to ___.

predator - leopard prey - deer

Identify the predator and prey.

mutualism

Identify the relationship shown in this diagram.

parasitism tick - parasite dog - host

Identify this symbiotic relationship.

humans = host Athlete's foot fungus = parasite

In athlete's foot fungus and humans, which is the host and which is the parasite?

competition

In some habitats bluebirds and sparrows inhabit nearly the same ecological niche. In many areas, bluebirds are being replaced by the sparrows as a result of ___.

Mutualism

Nitrogen-fixing bacteria live on the roots of legumes in swellings called nodules. The bacteria turn nitrogen compounds into usable forms by plants. The plants provide moisture and nutrients for the bacteria. ___ best describes this relationship.

mutualism

Some hydras have green algae living symbiotically inside their bodies. The algae produce food for the hydra and receive shelter from the animal. What type of relationship exists between the two organisms?

commensalism

Some small fish attach themselves to the body of a shark without harming it and feed upon its left over food. This relationship would best be described as ___.

niche

The "role" an organism within its community is known as its ___.

lion - predator water buffalo - prey

The lion is the ___ The water buffalo is the ___

parasite

The organism that benefits in parasitism.

predator

The organism that hunts and feeds on another is called the ___.

prey

The organism that is hunted and attacked is the ___.

host

The organism that is hurt/harmed in parasitism.

parasitism

The relationship between athlete's foot fungus and humans is known as ___.

mutualism

The wrasse, a small marine fish, periodically cleans harmful parasites from the mouth and body of the moray eel. The moray, in turn, protects the wrasse from larger predators and provides it with a constant food supply. This is an example of ___.

parasitism mutualism commensalism

Three types of symbiotic relationships (symbiosis) are: ___, ___, & ___.

competition

Two different species of insect-eating birds feed and nest at different levels in the same conifer. In this way they avoid ___.

competition

Two similar species occupy similar niches. As a result, which is most likely to occur between the two species?