Ecosystem Review

Definitions

100

What is an herbivore?

an animal that eats only plants

200

What a scavenger?

an animal that eats dead animals

300

What is a food web?

overlapping food chains in one area

400

What is an ecosystem?

All the living and nonliving things in one area interracting together with their environment

500

What is a fragmented habitat?

A habitat that has been separated due to human activity. For example-a highway going through open land in LA

Roles

100

This organism eats only meet

carnivore

200

This organism is the responsible for providing food and energy to consumers

producers/plants

300

This organism help take nutrients from rotting or decaying organisms and putting those nutrients back into the soil

decomposers 

400

This organism is the ultimate hunter and has no predators

Apex predator

500

True or False

Killer Whales have no known predators. 

True

Types of Consumers

100

This organism would never hunt an animal for food. It prefers vegetable leaves. 

herbivore

200

Give 3 examples of an omnivore

answers may vary

bears, birds, dogs, 

300

This animal does not hunt live animals. It waits until something else kills it before it feasts.

Scavenger

400

Which is the primary consumer?

grass > bunny > hawk > fungi

bunny

500

Which organism is in the third trophic level?

seaweed > guppy > large fish > seal > shark

large fish

Food Chains

100

What organisms are in trophic level 1?

plants/producers

200

What organism could fit in this chain?

corn > bird > __________ > hawk

answers may vary

snake, cat

300

True or False

Food chains all end with a top predator

False, there can be food chains in an ecosystem that do not include the top predator.

400

What are the 2 food chain questions?

what does it eat?

what is it eaten by?

500

Fix the following food chain

algae < krill < large fish < seal < killer whale

arrows are backwards

Food Webs

100

Define a food web

A food web is overlapping food chains in one ecosystem

200

How would you be able to tell which animal in the food web is the top predator?

It will have the most arrows pointed to it

300

True or False

Food webs are just like food chains, but food webs show all the possible food chains from one ecosystem

True

400

How would a lack of sunlight affect a food web?

A lack of sunlight would affect the producers first and they would start to die off. Then, the primary consumers would have less to eat and start to die off. Then, the secondary/tertiary consumers would die off. And finally, the top predators would die off as well. 

500

How would an invasive species (an organism that is not naturally part of the ecosystem) affect a food web?

The invasive species would eat organisms that the natural predators would eat, resulting in less overall available energy for the ecosystem. The ecosystem would not be balanced.