Stemscopes: Food Webs

The food of almost any type of organism can be traced to _________________.

• the sun

• the ocean

• bacteria

• plants

Which of the following best explains the primary role of decomposers in ecosystems? Decomposers ______________

• break down dead organisms and recycle materials.

• provide an important source of food for many animals.

• change matter that is not food into matter that is food.

• extract water from soil and release it into the atmosphere.

Plants and animals put solids, liquids, and gases into the environment by _____________

• absorbing nutrients.

• producing offspring.

• consuming food.

• releasing waste.

Destiny is given a list of organisms and asked to determine how these organisms interact together. Destiny draws them in a food web diagram, which is provided.

Based on her diagram, what is the role of the sunfish in this food web?

• To break down waste products made by insect larvae

• To provide energy for the bass and snapper turtle

• To take in light from the sun and produce food

• To consume the algae and pond plants

The main requirement for a diverse ecosystem is that ____________

• new species, which compete with existing species, are continually introduced.

• there are enough resources available to support many different types of organisms.

• the number of animal species is greater than the number of plant species.

• none of the organisms present are consuming other organisms to meet their needs.

Any materials unused and rejected as worthless or unwanted

• A. Producer

• B. Consumer

• C. Decomposer

• D. Waste matter

• E. Food web

An organism that consumes dead or nonliving biomass without need for internal digestion

• Producer

• Consumer

• Decomposer

• Waste matter

• Food web

An organism that makes its own food for energy

• Producer

• Consumer

• Decomposer

• Waste matter

• Food web

An interconnected set of food chains

• Producer

• Consumer

• Decomposer

• Waste matter

• Food web

An organism that gets energy from eating another organism

• Producer

• Consumer

• Decomposer

• Waste matter

• Food web