Ecology - Summer school

What is a population?

• One individual member of a species

• a group of individuals of the same species that live in the same area

• a community of different species and their environment

Which is an example of an ecosystem?

• An area of cold climate and communities of different species

• one elk

• a group of elks living together in the same area

• elks, snow rabbits, and owls living in the same area

Which definition best fits the term BIOTIC?

• The study of the interactions between animals and their environment

• Factors in the environment that are considered not alive

• Factors in the environment that are considered living or the remains of living things

Honey guide birds alert and direct badgers to bee hives. The badgers then expose the hives and feed on the honey first. Then, the honey guide birds eat as well.

• symbiosis

• parasitism

• mutualism

• commensalism

An organism that helps to recycle nutrients within an ecosystem by eating dead or decaying organisms is a:

• Predator

• Autotroph

• Producer

• Decomposer

Match the following

• This is an organism that supplies matter and energy, also known as an autotroph.

• Consumer

• This is an organism that breaks down and gains nutrients from dead organisms.

• Decomposer

• This is an organism that relies on other organisms for its food and energy supply; heterotroph

• Producer

• This is an animal that lives by preying on other animals.

• Parasite

• This is an organism which feeds on, but usually does not kill, a larger organism

• Predator

What happens to the amount of available energy in the pyramid as it moves up through the different levels?

• it increases

• it decreases

• it remains the same

What is a producer?

• an organism that gets energy from eating other organisms
• an organisms that uses sunlight to make its own food
• an organism that gets energy from eating dead organisms, non-living material or waste
• an organism that uses chemical energy to make its own food

2 factors which increase population size

• Birth Rate, Immigration
• Death Rate, Immigration
• Birth Rate, Emigration
• Death Rate, Emigration

Excessive amounts of rain caused a flood in the southwest United States that resulted in substantial amounts of deaths in the rabbit population? This situation is an example of a density _____________ limiting factor.

• density-independent
• density-dependent
• density- too high
• density- too low