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Ecosystems 2

Total questions: 20

Worksheet time: 13mins

Name
Class
Date
1.
An ecosystem is a community of animals and plants interacting with their ____________.
a)
habitat
b)
climate
c)
environment
d)
community
2.
Which is an example of an abiotic factor in a desert?
a)
Sun
b)
cactus
c)
scorpion
d)
snake
3.
Which is an example of a biotic factor in a desert?
a)
Sun
b)
soil
c)
snake
d)
minerals
4.

Organisms that can produce their own source of food are called...

a)

heterotrophs

b)

omnivores

c)

autotrophs

d)

herbivores

5.

Organisms that are unable to make their own food are called...

a)

autotrophs

b)

heterotrophs

c)

homeotrophs

d)

heterovores

6.

A consumer that eats only plants is called...

a)

an omnivore

b)

a carnivore

c)

an autotroph

d)

an herbivore

7.

Heterotrophs that consume other heterotrophs are called...

a)

herbivores

b)

omnivores

c)

carnivores

d)

producers

8.

Heterotrophs that eat producers and other heterotrophs are called...

a)

autotrophs

b)

herbivores

c)

carnivores

d)

omnivores

9.

Why are decomposers necessary?

a)

Because we compose too much...

b)

To take basic materials and make them more complex...

c)

To take complex materials and break them down to basic stuff...

d)

So demusic can be really good...

10.
An ecosystem is made up of _______ and ________ things.
a)
Living and nonliving
b)
Alive and dead
c)
Plants and animals
d)
Land and water
11.
Communities are made up of living things only. Which one of these is a community?
a)
Trees, birds, dirt, worms
b)
Deer, grass, leaves, bunnies
c)
Whales, water, seashells, fish
d)
Sand, camels, mountains, coyotes
12.
Populations contain more than one member of the species. Which one of these is a population?
a)
Deer and mice
b)
10 squirrels
c)
squirrel
d)
squirrel, deer, and mice
13.
What is the role an organism plays in its ecosystem?
a)
Habitat
b)
Niche
c)
Organism
d)
Population
14.

What is the carrying capacity of the graph?

a)

1000

b)

8000

c)

800

d)

600

15.

What happens if a population grows past its carrying capacity?

a)

The population keeps growing

b)

The population starts to die off

c)

The entire species will go extinct

d)

The carrying capacity just increases

16.

The largest number of individuals that an environment can support long term is...

a)

carrying capacity

b)

emigration

c)

immigration

d)

population density

17.

Something that regulates the size of a population is called...

a)

a limiting measure

b)

a limiting factor

c)

carrying capacity

d)

biodiversity

18.
Which of the following would INCREASE the carrying capacity of an ecosystem?
a)
increase in predators
b)
disease
c)
increase in available food
d)
drought
19.
All members of one species in a certain area.
a)
Population
b)
Limiting Factors
c)
Immigration
d)
Birth Rate
20.
Environmental factors that keep a population from increasing. 
a)
Carrying Capacity
b)
Limiting Factors

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