Ch. 4 Flashcard: Ecosystems and Communities

Front

What is a keystone species?

Back

A species that plays a critical role in the health, maintenance, growth, or definition of an ecosystem.

Front

Why can several species of warblers live in the same spruce tree?

Back

They occupy different niches within the tree.

Front

If the producers in an energy pyramid store 10,000 Kcal, how many calories do the first level consumers store?

Back

1,000 Kcal.

Front

Where are the sun’s rays least direct?

Back

Near the poles.

Front

How do consumers obtain energy?

Back

By hunting, searching, and/or gathering their own food.

Front

What is an ecosystem?

Back

A community of living organisms interacting with their physical environment.

Front

Define 'niche' in an ecological context.

Back

The role or function of an organism or species within an ecosystem, including its habitat, resource use, and interactions with other organisms.

Front

What is the significance of biodiversity in ecosystems?

Back

Biodiversity contributes to ecosystem resilience, productivity, and stability.

Front

Explain the concept of energy transfer in an ecosystem.

Back

Energy transfer in an ecosystem occurs through food chains and food webs, where energy is passed from producers to consumers and decomposers.

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.