Ecosystems Grade 5 Unit Review

Front

What is the greatest challenge to organisms living in estuaries?

Back

the varying levels of salt

Front

Which type of ecosystem best removes pollutants from water?

Back

estuary

Front

In a forest ecosystem, which has the most direct access to the main energy source? Options: producer, consumer, scavenger, decomposer

Back

producer

Front

How do decomposers recycle dead trees?

Back

by turning them into soil

Front

In a food web, how are consumers most often described?

Back

by the food they eat

Front

Which organism is a producer? Options: ladybug, sunflower, spider, deer

Back

sunflower

Front

If more frogs are introduced into a wetlands ecosystem, what will most likely happen to the number of insects?

Back

The number of insects will decrease.

Front

What would happen if the snakes were taken out of this food chain? Clover → Grasshopper → Frog → Snake → Owl

Back

Frogs would increase.

Front

Which way does energy flow in the food chain?

Back

from the sun to the grass to the mouse

Front

Changing ocean temperatures have led to a large decrease in the number of horseshoe crabs. Which effect will most likely occur next?

Back

The razor clam population will increase.