Explain Producer and Consumer Roles - Biology

Energy stored as producer biomass after respiration. Energy remaining after producer respiration costs.

An organism that eats dead organic matter (detritus). They physically consume dead plant and animal material.

A consumer that eats both producers and consumers. Mixed feeders can occupy multiple trophic levels.

Fox. Predator that eats the rabbit primary consumer.

$1{,}000\ \text{kJ}$. Apply the $10%$ rule: $10{,}000 \times 0.1$.

$50\ \text{kJ}$. Apply the $10%$ rule: $500 \times 0.1$.

Energy flows; it does not cycle. Energy is continuously lost as heat.

A primary consumer that eats producers. Plant-eaters occupy the second trophic level.

A consumer that eats secondary consumers. Third level above producers, often apex predators.

A consumer that eats primary consumers. Second level above producers in energy transfer.

A consumer that feeds directly on producers (usually an herbivore). First level above producers in food chains.

Heterotroph. 'Hetero' means other, indicating dependence on others.

Autotroph. 'Auto' means self, 'troph' means feeding.

A chemosynthetic autotroph (chemoautotroph). Found in deep ocean vents or sulfur-rich environments.

Photosynthesis. Light energy + $CO_2$ + $H_2O$ → glucose + $O_2$.

They transfer energy by feeding on producers or other consumers. They move energy up through trophic levels.

They convert external energy into chemical energy in biomass. They form the base of all food chains.

A consumer that eats other consumers. Meat-eaters occupy higher trophic levels.

A heterotroph that obtains energy by eating other organisms. They cannot produce their own food.

An autotroph that makes organic food from inorganic sources. They are the foundation of food webs.

An organism that breaks down dead matter and wastes into simpler substances. They secrete enzymes to externally digest organic matter.

Fungi. They release nutrients back to soil and water.

Detritivores ingest detritus; decomposers chemically break it down. Physical vs. chemical breakdown methods differ.

A feeding position in a food chain or food web. Each level represents one step in energy transfer.

The second trophic level. They directly consume producers for energy.

A linear pathway showing who eats whom for energy transfer. Each arrow shows direction of energy flow.

A network of interconnected food chains in an ecosystem. It shows complex feeding relationships in ecosystems.

The total mass of living organic material in a trophic level. More biomass supports more consumers at that level.

The rate at which producers convert energy into biomass. Higher rates support more complex food webs.