Aquatic Science Unit 5 Test

Front

What is an estuary?

Back

An estuary is an area where saltwater and freshwater mix.

Front

Who are the primary producers in an aquatic food web?

Back

Phytoplankton and seaweed are the primary producers in an aquatic food web.

Front

Which of the following is NOT a freshwater ecosystem?

Back

An estuary is not a freshwater ecosystem.

Front

What occurs when a population exceeds its carrying capacity?

Back

When a population exceeds its carrying capacity, the population starts to die off.

Front

Define carrying capacity in an ecosystem.

Back

Carrying capacity is the maximum population size an ecosystem can support.

Front

What are phytoplankton?

Back

Phytoplankton are microscopic plants that float in water and are primary producers in aquatic ecosystems.

Front

What role do zooplankton play in aquatic ecosystems?

Back

Zooplankton are primary consumers that feed on phytoplankton.

Front

What is the significance of nutrient levels in an estuary?

Back

Estuaries are often high in nutrients, supporting diverse ecosystems and high productivity.

Front

How do human activities impact estuaries?

Back

Human activities can lead to pollution, habitat destruction, and changes in water flow, negatively affecting estuaries.

Front

What is the difference between freshwater and saltwater ecosystems?

Back

Freshwater ecosystems contain low salt concentrations, while saltwater ecosystems, like oceans, have high salt concentrations.