Living Systems. Investigation 1.1 Review

Which organism best replaces ??? in the food web shown above?

• A producer

• A consumer

• A second-level consumer

• A decomposer

The rabbit population in a certain ecosystem sometimes decreases dramatically. One possible explanation for this decrease is _____.

• an increase in the field mouse population

• a decrease in the owl population

• an increase in the grass population

• an increase in the coyote population

Carnivores eat both plants and animals

• True

• False

Consumers eat producers or other consumers.

• True

• False

When producers die, they break down decomposers.

• True

• False

Omnivores eat only insects.

• True

• False

Herbivores eat only plants.

• True

• False

What type of organism is missing from this food web?

• Producers

• Consumers

• Decomposers

• Carnivores

If the frog population suddenly increased, which organism would be most likely to decrease right away?

• Owls

• Snakes

• Grass

• Snails

All animals are...

• producers
• consumers
• carnivores
• omnivores