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Ecology

Total questions: 42

Worksheet time: 1hrs 26mins

Name
Class
Date
1.

What type of organism makes its own food?

a)

consumer

b)

carnivore

c)

producer

2.

Which of the following is a producer?

a)
b)
c)
d)
3.

What is overgrazing?

a)

When beavers create a structure that keeps water from flowing through.

b)

When humans put toxic chemicals in the water.

c)

When herd animals (like cows) over graze or eat too much from the land.

d)

When people throw seeds all over the land.

4.
Biodiversity refers to
a)
extinct species
b)
the variety of species on Earth
c)
nonrenewable resources
d)
the rate of species decline
5.
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
6.
What effect will an invasive species have on the carrying capacity of an ecosystem?
a)
The carrying capacity will increase
b)
The carrying capacity for everyone will decrease
c)
The carrying capacity will only decrease for those in competition for same resource
d)
The carrying capacity for all animals will stay the same
7.
1. What makes a species invasive?
a)
Moving to a new ecosystem and taking resources from natives 
b)
Not having papers
c)
Species that can't adapt
d)
Plants that take up too much space
8.

If the amount of food or resources available increases, the carrying capacity for an animal.....

a)

Stays the same

b)

Increases

c)

Decreases

d)

Fluctuates

9.

What point on the graph represents the carrying capacity?

a)

A

b)

B

c)

C

d)

D

10.

When a population grows past the ecosystem's carrying capacity, what happens to the population?

a)

Continues to grow

b)

The population starts to die off to return to carrying capcity

c)

The population will go extinct due to lack of resources

d)

The population grows then finds a new carrying capacity

11.
How will competition affect the carrying capacity of an ecosystem for the animal in competition?
a)
Decrease
b)
Increase
c)
Will show not affect
d)
Competition does not exist in nature
12.

In a forest ecosystem, which of the following is the best example of a limiting factor for a rabbit population?

a)

The squirrel population

b)

The amount of sunlight

c)

Amount of grass available

d)

Rabbits have no limiting factors

13.

Water, sunlight, shelter, and space are resources that are often........

a)

abiotic limiting factors

b)

biotic limiting factors

c)

non-limiting factors

d)

exponetial factors

14.
What would the carrying capacity of this graph be
a)
530
b)
400
c)
500
d)
480
15.

According to the graph, what is causing the deer population to decrease

a)

They got sick

b)

The wolf population is decreasing

c)

The wolf population increased

d)

They ran out of food

16.

Predator population lags behind prey population because......

a)

Increase in predators leads to decrease in prey

b)

Increase in predators leads to increase in prey

c)

Increase in predators leads to decrease in producers

d)

Increase in producers leads to increase in prey

17.

Biotic factors are

a)

Living

b)

nonliving

18.

Abiotic factors

a)

living

b)

nonliving

19.

The amount of sunlight available for plants would be a:

a)

Limiting factor

b)

abiotic number

c)

carrying capacity

d)

population

20.

Choose all the abiotic factors listed

a)

water

b)

mates

c)

space

d)

temperature

e)

predators

21.

Choose all the biotic factors listed

a)

sunlight

b)

food

c)

predators

d)

disease

e)

water

22.

Biodiversity is the ____________ and variability of __________ on earth

a)

variety

b)

life

c)

diversity

d)

difference

23.

This refers to the total disappearance of all the members of a particular group of species.

a)

Extinction

b)

Biodiversity

c)

Natural Selection

d)

Disappearance

24.
A tick and a dog have this type of relationship.
a)
mutualism
b)
commensalism
c)
neutralism
d)
parasitism
25.
The snake is a predator to what prey in this food chain?
a)
frog
b)
grass
c)
grasshopper
d)
hawk
26.
Why is a deer classified as a herbivore?
a)
A deer makes its own food.
b)
A deer eats only plants.
c)
A deer eats only animals.
d)
A deer eats plants and animals.
27.
What is formed during primary succession that doesn't need to be formed during secondary succession?
a)
pioneer species
b)
soil
c)
climax community
d)
lichens
28.
What type of succession is shown going from figure A to figure B?
a)
primary succession
b)
eutrophication
c)
secondary succession
d)
intermediate
29.
After a forest fire, an ecosystem would start regrowth through -
a)
primary succession
b)
secondary succession
c)
climax community
d)
limiting factors
30.
Which catastrophic event will most likely have the effect of returning an ecosystem to primary succession?
a)
A tornado
b)
A volcanic eruption
c)
A flood
d)
A drought
31.
succession that occurs in an area with no soil
a)
ecological succession 
b)
primary succession 
c)
secondary succession
d)
pioneer speciles
32.
starts with bare rock followed by lichen
a)
primary succession 
b)
secondary succession
c)
both types of succession
33.
A frog eats a fly. The frog and fly are demonstrating ________.
a)
mutualism
b)
competition
c)
predator/prey
d)
parasitism
34.
A relationship between two species where one benefits while the other is harmed.
a)
Mutualism
b)
Commensalism
c)
Parasitism
d)
Naturalism
35.
True or False. In this energy pyramid, the consumers on each level only get about 10 percent of energy that the trophic level before it has stored.
a)
True
b)
False
36.
A pyramid shape is used to show the amount of available energy at each trophic level because... 
a)
energy decreases as you go up the food chain, just like the pyramid shape gets smaller as you go up. 
b)
energy increases up the food chain just like the pyramid shape gets smaller as you go up. 
c)
energy amounts are the same at each trophic level
37.

In this energy pyramid, which organisms have the most energy available?

a)

Producers

b)

Carnivores

c)

Herbivores

d)

Top Predator

38.

In this energy pyramid, which organism has the least amount of energy available?

a)

Producers

b)

Herbivores

c)

Carnivores

d)

Top Predator

39.
The diagram represents a pyramid of energy in an ecosystem.  Which level would most likely contain members of the plant kingdom?
a)
A
b)
B
c)
C
d)
D
40.
If there is 1000 Kcal available in the producers in trophic level 1, how much energy is available in the herbivores in trophic level 2?
a)
10 Kcal
b)
1 Kcal
c)
100 Kcal
d)
1000 Kcal
41.

What is biomass?

a)

Anything that is or once was alive

b)

A fossil fuel

c)

a nonrenewable resource

d)

A oil we find underground

42.

Why is the loss of biodiversity so bad?

a)

Loss of biodiversity means a loss of useful genes to pass along.

b)

It's not bad but not good.

c)

Loss of biodiversity means more of a single species being present.

d)

Loss of biodiversity means that ecosystems can thrive because there are less animals to eat their resources.

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