Population & Community Ecology

Front

What is the definition of a community in ecology?

Back

A community is a group of different populations that live in a given area and interact with each other.

Front

What is a trophic level?

Back

A trophic level is each step in the transfer of energy and matter within a biological community.

Front

What are detritivores?

Back

Detritivores are heterotrophs that 'clean up' the ecosystem by eating dead and decaying organisms.

Front

What is a consumer in ecological terms?

Back

A consumer is an organism that must obtain its nutrients by eating other organisms.

Front

What is a food chain?

Back

A food chain is a simple model that links organisms based on their feeding relationships in a single line.

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 complex network of interconnected food chains.

Front

What role do producers play in an ecosystem?

Back

Producers, such as plants, convert solar energy into chemical energy through photosynthesis, forming the base of the food chain.

Front

What is the significance of keystone species in an ecosystem?

Back

Keystone species are crucial for maintaining the structure of an ecological community, influencing the types and numbers of other species.

Front

Define primary consumers and give an example.

Back

Primary consumers are herbivores that eat producers; for example, rabbits and deer.

Front

What is the role of decomposers in an ecosystem?

Back

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