Biology Flashcard

Front

What is the energy available to secondary consumers if 8,000,000 kJ m⁻² yr⁻¹ is available from producers?

Back

80,000 kJ m⁻² yr⁻¹

Front

What is the energy available to tertiary consumers if 8,000,000 kJ m⁻² yr⁻¹ is available from producers?

Back

8,000 kJ m⁻² yr⁻¹

Front

What is the INITIAL energy source for ALL living things (except for chemosynthesis)?

Back

Light

Front

What are the two components that define an ecosystem?

Back

Community and abiotic environment

Front

Which organisms INTERNALLY digest dead organic matter and then absorb the nutrients?

Back

Detritivores

Front

Define producers in an ecosystem.

Back

Organisms that produce energy through photosynthesis or chemosynthesis.

Front

What is the role of consumers in an ecosystem?

Back

Consumers obtain energy by eating other organisms.

Front

What is the difference between autotrophs and heterotrophs?

Back

Autotrophs produce their own food; heterotrophs consume other organisms for energy.

Front

What is the significance of decomposers in an ecosystem?

Back

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

Front

Explain the concept of energy transfer in a food chain.

Back

Energy decreases as it moves up the food chain, with only about 10% transferred to the next trophic level.