CH 3.2 SAVVAS TEST-Energy Flow in Ecosystems: DIGITAL

Front

What are decomposers?

Back

Organisms that feed on dead and decaying matter, breaking it down and recycling nutrients back into the ecosystem.

Front

What is the 10% rule in energy transfer?

Back

About ten percent of the energy at one trophic level is passed to the next trophic level.

Front

What does an ecological pyramid of biomass represent?

Back

The total mass of living matter at each trophic level, measured in grams or kilograms.

Front

What do the percentages in an energy pyramid represent?

Back

The relative amounts of energy contained by the organisms in each trophic level.

Front

What type of organisms do all food chains and food webs begin with?

Back

Primary Producers.

Front

Define autotrophs.

Back

Organisms that produce their own food using sunlight or chemical energy, such as plants.

Front

Define heterotrophs.

Back

Organisms that cannot produce their own food and must consume other organisms for energy.

Front

What is a trophic level?

Back

A step in the food chain or food web, representing the flow of energy and nutrients.

Front

What is the role of primary producers in an ecosystem?

Back

They convert solar energy into chemical energy through photosynthesis, forming the base of the food chain.

Front

What are first-level consumers?

Back

Organisms that eat primary producers; they are also known as herbivores.