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W1: Ecosystems & Invasive Species

Total questions: 15

Worksheet time: 1hrs 22mins

Name
Class
Date
1.

Is disease a biotic or abiotic factor?

a)

biotic

b)

abiotic

2.

Is sunlight a biotic or abiotic factor?

a)

biotic

b)

abiotic

3.

T/F: Abiotic factors are an unimportant part of ecosystems.

a)

true

b)

false

4.

Which of the following MOST completely describes the components of a pond ecosystem?

a)

the soil and water that make up the pond

b)

the organisms and non-living environment in and around the pond

c)

the plants and animals that live in and around the pond

d)

the fish and other aquatic animals in the pond

5.

Which statement below refers only to biotic components in an ecosystem?

a)

Evaporation, transpiration, and precipitation are complex processes that cycle water between the atmosphere and the Earth's surface.

b)

Photosynthesis and respiration are not considered atmospheric processes.

c)

Vegetation is an indicator of several environmental factors, including precipitation, temperature, soil, geology, and wind.

d)

In Yellowstone Park, shrubs have expanded their range into large areas formerly populated by short grasses, due to overgrazing and trampling by livestock.

6.
When taken to a new habitat, non-native plants often threaten native plants of the new habitat.  Why do they do this?
a)
Non-native plants are able to mutate rapidly
b)
Non-native  plants cause native animals to relocate
c)
Non-native plants are able to be used for medicine
d)
Non-native plants compete with native plants for resources
7.
Which of the following is a key characteristic of most invasive species?
a)
Ability to breathe in the air & in the water
b)
Large, sharp teeth
c)
Produce many offspring
d)
Is a top predator
8.
Why do the populations of invasive species grow so quickly? 
a)
Invasive Species are native to an area. 
b)
Invasive species are prey to many animals.
c)
Invasive species have no predators.
d)
Invasive species keep the ecosystems in equilibrium.
9.

Name the levels of an ecosystem in order from smallest to largest.

a)

Ecosystem, population, organism, community

b)

Community, organism, population, ecosystem

c)

Organism, population, community, ecosystem

d)

Ecosystem, community, population, organism

10.

The primary cause of invasive species introduction is

a)

too much food

b)

human actions

c)

weather events

d)

asteroids

11.
Invasive species alter the ecosystem by a___________in number quickly,this leads to _____ food for the native  species. 
a)
increasing  less
b)
decline  decreasing
12.

TRUE or FALSE? Invasive species can be introduced to an ecosystem intentionally.

a)

True

b)

False

13.

Invasive species don't harm native species that are beneficial to the environment.

a)

TRUE

b)

FALSE

14.

Invasive species can crowd out native species.

a)

TRUE

b)

FALSE

15.

Which order is correct? (Levels of Ecological Organization)

a)

Organism, Community, Ecosystem, Population, Biosphere

b)

Organism, Community, Population, Ecosystem, Biosphere

c)

Clownfish, Group of Clownfish, (Sea Turtle, Star Fish, Jelly Fish), Marine, The World