Environmental Science Sem 1 Final Exam

Front

What is the impact of introducing a non-native species into an ecosystem?

Back

It can disrupt existing food chains and lead to species decline.

Front

What is an example of mutualism in an ecosystem?

Back

A bee pollinating a flower.

Front

How can competition among species affect their niches?

Back

Competition can lead to niche differentiation, allowing species to coexist.

Front

What is one effect of air pollution on aquatic ecosystems?

Back

Air pollution can lead to acid rain, which harms aquatic life.

Front

What is a primary producer in an aquatic ecosystem?

Back

Algae.

Front

Define biodiversity.

Back

Biodiversity refers to the variety of life in a particular habitat or ecosystem.

Front

What is a food web?

Back

A food web is a complex network of feeding relationships among organisms in an ecosystem.

Front

Explain the concept of an ecological niche.

Back

An ecological niche is the role and position a species has in its environment, including all interactions with biotic and abiotic factors.

Front

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

Back

A food chain is a linear sequence of organisms through which nutrients and energy pass, while a food web is a more complex network of interconnected food chains.

Front

What is the role of decomposers in an ecosystem?

Back

Decomposers break down dead organic matter, recycling nutrients back into the ecosystem.