Env Sci, Ch 8, Understanding Populations, Section One, Quiz

A hawk building its nest on an arm of a saguaro cactus is an example of 

• commensalism
• mutualism
• parasitism
• predation

The series of changes that occurs after a disturbance in an existing ecosystem is called

• primary succession
• secondary succession
• disturbance succession
• pioneer succession

The place where an organism lives and that provides the things the organism needs is called its

• habitat
• population
• species
• community

Which of the following is an example of a population?

• The cats and dogs in your neighborhood
• the bushes and grass in a park
• the rocks in a rock collection
• the gray wolves in a forest

A group of antelope leaving the herd in search of a better grassland is an example of

• immigration
• emigration
• increasing birth rate
• decreasing death rate

An organism's particular role in its habitat, or how it makes its living, is called its

• carrying capacity
• ecosystem
• competition
• niche

The struggle between organisms to survive in a habitat with limited resources is called

• competition
• predation
• symbiosis
• parasitism

When a jellyfish paralyzes a tiny fish with its poisonous tentacles, the fish is the

• predator
• host
• prey
• parasite

Counting the number of organisms in a small area and multiplying to estimate the number in a larger area is called

• direct observation
• mark and recapture
• population density
• sampling

Mutualism, commensalism, and parasitism are the three types of

• symbiotic relationships
• predation
• competition
• prey adaptations