Unit 3: Homeostasis Test Review 2024

Front

What is homeostasis?

Back

Homeostasis is the process by which living organisms maintain a stable internal environment despite changes in external conditions.

Front

What is a trophic level?

Back

A trophic level is a position in a food chain or food web, representing the flow of energy and nutrients from one organism to another.

Front

What is a producer in an ecosystem?

Back

A producer is an organism that can make its own food through photosynthesis or chemosynthesis, serving as the base of the food chain.

Front

What is the role of primary consumers?

Back

Primary consumers are organisms that eat producers; they are herbivores that obtain energy by consuming plants.

Front

What is the significance of the 10% rule in energy transfer?

Back

The 10% rule states that only about 10% of the energy from one trophic level is passed on to the next level, while the rest is lost as heat.

Front

What factors affect the rate of photosynthesis?

Back

The rate of photosynthesis is affected by the amount of water, carbon dioxide concentration, and temperature.

Front

What is a food chain?

Back

A food chain is a linear sequence of organisms through which nutrients and energy pass as one organism eats another.

Front

What is the difference between a food chain and a food web?

Back

A food chain is a simple linear pathway of energy flow, while a food web is a complex network of interconnected food chains.

Front

What happens to an ecosystem if a top predator is removed?

Back

Removing a top predator can lead to an increase in the population of primary consumers, which may overgraze producers and disrupt the ecosystem.

Front

What is the role of decomposers in an ecosystem?

Back

Decomposers break down dead organic matter, recycling nutrients back into the soil and supporting plant growth.