Ecosystems Review

The relationship between seaweed and sea turtles is an example of 

• decomposition
• predator and prey
• competition
• producer and consumer

How is a food web different from a food chain?

• A food web combines many different food chains.
• A food web does not include decomposers whereas a food chain does.
• A food web is for insects whereas a food chain is for mammals.
• A food web is for insects whereas a food chain is for mammals.

Organism A spends a significant portion of its life in or on organism B.  Organism A causes harm to organism B without immediately killing it.  Which of the following describes this interaction?

• parasite/host
• predator/prey
• carnivore/omnivore
• host/parasite

With which abiotic factor does a black bear interact?

• salmon
• plants
• insects
• a cave

What is the role of an oak tree in an ecosystem?

• It cannot make its own food.
• It uses the sun's energy to make food.
• It eats other organisms.
• It breaks down dead organisms and returns nutrients to the soil.

Which of the following is an interaction with an abiotic element of the environment?

• catching beetles on the lawn
• drinking water from a stream
• burying acorns by an oak tree
• running from a neighbor's cat

A forest food chain contains a tree, grasshopper, lizard, bird, and wolf.  Which organism(s) are consumers?

• All of the organisms
• wolf, lizard, and bird
• wolf
• wolf, lizard, bird, and grasshopper

Which type of organism "recycles" nutrients back into an ecosystem?

• decomposers
• consumers
• producers
• omnivores

A pond ecosystem includes a number of different types of birds, mammals, reptiles, and fish.  All of these different groups make up the ecosystem's

• microorganisms
• abiotic factors
• populations
• community

Dan lives in a small rural community several miles from the nearest city.  What do you predict will be the greatest immediate effect that a new housing development will have on the ecosystem surrounding Dan's community?

• The increase in traffic cause by the development's residents
• The strain on the existing school system caused by population growth
• The existing habitat that will be lost in construction of the development
• The increase in electricity and water usage required by the development.