Exam 35: Populations and Communities

The three types of survivorship curves are idealized situations.What type of curve probably happens more frequently in nature?

______________ serves to narrow niche breadth.

When the growth rate of a population tapers off at a certain point and remains at the same point indefinitely,the population is said to have reached the:

The ________________ of a habitat is the number of individuals the habitat has the resources to support indefinitely.

______________ are the fundamental units of ecology.

_______________ is the consuming of one organism by another.

The term "ecology" was first used by:

Lice and their relationship with mammals is an example of what type of relationship?

The number of different kinds of species inhabiting an ecosystem is called _________________.

A type of symbiosis in which one species benefits from the relationship while the other neither benefits nor is harmed is called:

Predators can drive their prey to extinction unless the prey has:

The principle of competitive exclusion states that no two species with the same niche can coexist indefinitely when resources are limiting.

When population growth rate = rN,this type of growth can be called:

A symbiotic relationship in which both species benefit is called ___________.

Which type of symbiosis would exist between a tapeworm living in a human host using its nutrients for its own gain and detriment to the host?