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Ecosystem and Ecological Interactions

Total questions: 15

Worksheet time: 8mins

Name
Class
Date
1.

The environment also includes ________, or living, factors.

a)

abiotic

b)

biotic

c)

living

d)

non-living

2.

A community of organisms and their environment is called a(n) ______________.

a)

Ecosystem

b)

Environment

c)

Interaction

d)

Community

3.

________ make their own food while _______ must eat other organisms to get energy.

a)

Producers, consumers

b)

Decomposers, producers

c)

Consumers, producers

d)

Carnivores, herbivores

4.

A tick sucks blood from a dog. In this relationship, the tick is the _____ and the dog is the _______.

a)

parasite, host

b)

predator, host

c)

parasite, prey

d)

host, parasite

5.

Nature's recyclers are ________

a)

producers

b)

consumers

c)

decomposers

6.

Remoras and sharks have a relationship that is best described as

a)

Commensalism

b)

Mutualism

c)

Parasitism

d)

Predation

7.

Hermit crabs live in shells made and then abandoned by snails. This relationship neither helps nor harms the snails.

a)

Commensalism

b)

Predation

c)

Mutualism

d)

Parasitism

8.

An organism that needs to eat other organisms to obtain energy is known as a:

a)

Predator

b)

Prey

c)

Parasite

d)

Host

9.

What is the definition of - Herbivore?

a)

An organism that obtains energy by eating both plants and animals

b)

An organism that obtains energy by eating only plants

c)

An organism that obtains energy by eating only animals

10.

What is the definition of - Carnivore?

a)

An organism that obtains energy by eating both plants and animals

b)

An organism that obtains energy by eating only plants

c)

An organism that obtains energy by eating only animals

11.

What is the role of decomposers in the ecosystem?

a)

Hunt other animals

b)

Break down dead matter and recycle it back to the environment

c)

Produce food using the energy from the sun

d)

Feed on both animals and plants

12.

This is known as a relationship in which both organisms involved benefit. 

a)

Mutualism

b)

Commensalism

c)

Competition

d)

Parasitism

13.

Lions typically fight to the death for territory, mates, and food sources. Lions are most likely fighting due to:

a)

Competition

b)

Predation

c)

Commensalism

d)

Herbivory

14.

This is a relationship where one organism hunts and one is hunted, such as a Lynx hunting a snowshoe hare, is known as:

a)

Competition

b)

Predation

c)

Commensalism

d)

Herbivory

15.

The environment includes _________ factors such as water, rocks, and light.

a)

abiotic

b)

biotic

c)

living

d)

predator