Dynamic Ecosystems: Module Review

The largest number of individual of one species that an ecosystem can support over time is its biotic potential.

• True
• False

A symbiotic relationship that benefits both species is referred to as commensalism.

• True
• False

What is the difference between a community and an ecosystem?

• An ecosystem consists of living and nonliving things in an area. A community is all the populations in the area.
• An ecosystem consists of living and nonliving things in an area. A community is all the members of one species in the area.
• An ecosystem consists of nonliving things in an area. A community is all the living things in the areas.
• An ecosystem consists of all the populations in an area. A community is all the nonliving things in the area.

Select all that apply:

Which of these is a limiting factor?

• food supply
• shelter
• existence of predators
• strong winds

In a predator-prey relationship, __________.

• the predator hunts the prey for food.
• the prey hunts the predator for food
• the prey keeps the predator population from growing too large
• the prey are the producers

A population cannot exceed the _________ of its environment, which is the largest number of individuals that an ecosystem can support.

• carrying capacity
• climax community

• limiting factor

• ecological succession

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

• mutualism
• commensalism

• parsitism

• cooperative

A climax community is a community that ________.

• is about to experience a major change
• has just been radically altered by a natural disaster
• is a stable community that no longer goes through major ecological change
• is always characterized by large trees

As plants in an area undergoing ecological succession die, __________.

• they are replaced by plants of the same species
• they are replaced by plants of a different species
• they replaced by plants of the same or different species

• no plants grow in their place

Runoff fertilizer and livestock waste from farms can add to the ___________ of a pond.

• eutrophication
• ecological succession

• climax community

• pollution