BIO110: Final Exam Practice

Front

What is the primary function of the ozone layer in Earth's atmosphere?

Back

To absorb and block harmful ultraviolet radiation from the sun.

Front

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

Back

A food chain shows a single linear path of energy flow, while a food web shows multiple interconnected paths.

Front

What is a keystone species?

Back

A species that has a disproportionately large impact on its environment relative to its abundance.

Front

What is photosynthesis?

Back

The conversion of light energy into chemical energy by plants.

Front

Which gas is most responsible for the greenhouse effect?

Back

Carbon Dioxide.

Front

Define a food chain.

Back

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

Front

Define a food web.

Back

A complex network of feeding relationships among various organisms in an ecosystem.

Front

What role do producers play in an ecosystem?

Back

Producers convert light energy into chemical energy through photosynthesis, forming the base of the food chain.

Front

What is the significance of biodiversity in an ecosystem?

Back

Biodiversity enhances ecosystem productivity and stability, providing resilience against environmental changes.

Front

What is the greenhouse effect?

Back

The warming of Earth's surface due to the trapping of heat by greenhouse gases in the atmosphere.