4th grade Ecosystems Review

Vocabulary

100

What is the living and nonliving things that interact in an environment? A. Organism B. Ecosystem C. Habitat D. Food Web

B. an ecosystem

200

What is the name of a consumer that eats plants and animals? A. omnivore B. herbivore C. producer D. carnivore

A. omnivore

300

What is an overlapping food chain? A. Ecosystem B. Organism C. Food Web D. Carnivore

C. a food web

400

What is a producer? A. A consumer that eats only meat B. A consumer that eats only plants C. A carnivore D. An organism that makes its own food

D. An organism that makes its own food

500

How does a producer get its energy? A. Eating other plants B. Eating animals C. It only needs water D. Sunlight

D. Sunlight

Food Chains

100

What is the beginning group of all food chains? A. consumers B. herbivores C. producers D. carnivores

C. producers

200

What is an animal that is hunted for food? A. predator B. consumer C. prey D. producer

C. prey

300

What is a living thing that gets energy by eating other animals for food? A. producer B. consumer C. herbivore D. sun

B. consumers

400

What is a living thing that breaks down dead things for food? A. producer B. consumer C. carnivore D. decomposer

D.decomposer

500

What is an animal that hunts another animal for food? A. prey B. producer C. photosynthesis D. predator

D. predator

Food Web 1

100

If there was a drought for many years, what would likely happen to the grass and mice? A. the grass would grow quickly and there would be many mice. B. the grass would grow quickly and there would be less mice. C. the grass would wilt and die and there would be many mice. D. the grass would wilt and die and there would be less mice.

D. the grass would wilt and die and there would be less mice.

200

A student was building a food web for a school project. Their food web included the sun, fish, birds, crabs, shrimp, and whales. What is missing from this food web? A. Humans B. Hawks C. Producers D. Carnivores

C. Producers

300

Which of the following do producers need to make their own food? A. sunlight and water B. sunlight, water and oxygen C. sunlight, water and carbon dioxide D. sunlight

C. sunlight, water and carbon dioxide

400

If hawks eat mice, the mice eat grasshoppers and the grasshoppers eat grass, what is most likely to happen if there is a shortage of grasshoppers? A. The number of mice and hawks will increase B. The amount of grass will decrease C. The amount of mice and hawks will decrease D. The amount of mice will increase, but the amount of hawks will decrease

C. The amount of mice and hawks will decrease

500

What is a consumer that eats only animals? A. Herbivore B. Omnivore C. Producer D. Carnivore

D. Carnivore

producer, consumer, or decomposer?

100

Which is a decomposer? A. mushroom B. hawk C. mouse D. algae

A. mushroom

200

Which is a producer? A. mushroom B. tree C. blue jay D. fox

B. tree

300

What do grass, trees, algae, and seaweed have in common? A. They are all producers B. They are all consumers C. They are all herbivores D. They are all omnivores

A. They are all producers

400

Which shows the steps of the food chain in order? A. consumer, producer, decomposer B. producer, consumer, decomposer C. producer, decomposer, consumer D. decomposer, producer, consumer

B. producer, consumer, decomposer

500

What organism in a food chain would have the GREATEST impact on the whole food chain if it were removed? A. hawk B. snake C. grass D. mouse

C. grass

Food Web 2

100

If a fox and hawk both eat rodents (mice, rats, ect.), what would happen to the rodents if the fox and hawk population doubled? A. the rodent population would increase B. the rodents would move to a different ecosystem C. the rodent population would decrease D. the rodents would have more babies

C. the rodent population would decrease

200

Which list shows all herbivores? A. zebra, elephant, fox B. giraffe, hawk, rabbit C. rabbit, giraffe, zebra D. wolf, fox, lion

C. rabbit, giraffe, zebra

300

There is a fire that destroyed all the trees and grass, but all the animals got away safely. After a few years, if the animals return, which has the best chance of survival? A. spider B. chipmunk C. grasshopper D. owl

C. grasshopper

400

What do the arrows in a food web represent? A. Eating B. The Flow of Energy C. Producers D. Omnivores

B. The Flow of Energy

500

Name one of each: Omnivore: Herbivore: Carnivore: Producer: Decomposer:

O-mouse, fox, people H-zebra, elephant, rabbit C-wolf, lion, shark P-cactus, trees, flowers D-mushroom, snail, worm