Biology Semester 1 Review

Front

What type of relationship exists between a tick and a dog?

Back

Parasitism: A relationship where one organism benefits at the expense of another.

Front

What happens to toxins as they move through a food pyramid?

Back

Toxins increase in concentration as they move up the food pyramid, a phenomenon known as biomagnification.

Front

What is the term for our effect on the environment based on what we consume and the waste we produce?

Back

Ecological Footprint: A measure of human demand on the Earth's ecosystems.

Front

What type of relationship exists between a tapeworm and a cat?

Back

Parasitism: A relationship where one organism benefits at the expense of another.

Front

What do we call an organism that gets energy from eating other organisms?

Back

Consumer: An organism that obtains energy by consuming other organisms.

Front

What is mutualism?

Back

Mutualism: A type of symbiotic relationship where both organisms benefit.

Front

Define commensalism.

Back

Commensalism: A relationship where one organism benefits and the other is neither helped nor harmed.

Front

What is a producer in an ecosystem?

Back

Producer: An organism that can make its own food, typically through photosynthesis.

Front

Explain the concept of competition in ecology.

Back

Competition: A relationship where two or more organisms vie for the same resources, such as food or space.

Front

What is the role of decomposers in an ecosystem?

Back

Decomposers: Organisms that break down dead or decaying organisms, recycling nutrients back into the ecosystem.