BB Ecosystem Structure Final Review

The study of the interaction of living and nonliving things in the environment.

• biology
• ecology
• zoology
• psychology

All the members of one type of species in a specific area at the same time.

• habitat
• community
• population
• ecosystme

the living parts of an ecosystem

• biotic factors
• biology
• abiotic factors
• animals

All of the different populations that live in a specific area.

• community
• habitat
• ecosystem
• village

In any food chain, the first trophic level is occupied by:

• Herbivores

• Secondary consumer

• Producers

• Keystone species

In an ecosystem, how will you describe the flow of energy and nutrients?

• Energy and nutrients cycle in one direction

• Energy flows forwards and backwards, nutrients flow in one direction.

• Energy cycles, nutrients flow in one direction.

• Energy flows in one direction, nutrients cycle.

What will happen if the number of snakes decrease?

• The number of grasshoppers will increase.

• The number of owls will decrease.

• The number of mice frogs will decrease.

• The number of birds will not be affected.

The heron picks insects off the buffalo's back. What type of relationship is this?

• commensalism

• mutualism

• parastisim

• predation

Which of the following is an example of the abiotic component of an ecosystem?

• bacteria

• algae

• soil

• lichen

What is a trophic level?

• Either producer or consumer

• Position in feeding relationships

• The same as ecological pyramids

• The same as food web