Ecosystems and Food Webs Quiz

Primary producers convert energy from sunlight into organic compounds.

Biomass represents the collective weight of living organisms in an ecosystem.

Keystone species like the sea otter have disproportionate impacts on their ecosystems.

Transpiration is the process of water movement through a plant and its evaporation from aerial parts.

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

Sunlight fuels photosynthesis, the basis of most ecosystems.

Herbivores are primary consumers, feeding directly on primary producers.

Decomposers like fungi break down dead organic matter, recycling nutrients.

In parasitism, one species (parasite) benefits at the expense of the other (host).

The ozone layer absorbs harmful UV radiation, protecting life on Earth.

Transpiration is the release of water vapor from plant leaves into the air.

The Pyramid of Energy illustrates the decreasing energy available at each trophic level.

Carbon dioxide is a key greenhouse gas trapping heat in the atmosphere.

Omnivores consume both plant and animal matter as part of their diet.

Nitrogen-fixing bacteria convert atmospheric nitrogen into a form usable by plants.