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Ecology Semester 2 Exam Review

Total questions: 30

Worksheet time: 30mins

Name
Class
Date
1.
What is a producer?
a)
an organism that gets energy from eating other organisms
b)
an organisms that uses sunlight to make its own food
c)
an organism that gets energy from eating dead organisms, non-living material or waste
d)
an organism that uses chemical energy to make its own food
2.
What is a herbivore?
a)
an animal that gets energy from eating other animals
b)
an organism that gets energy from eating only plants
c)
an animal that gets energy by eating both plants and other animals
d)
an animal that eats only herbs
3.
What is a carnivore?
a)
an animal that gets energy by eating other animals
b)
An animal that gets energy by eating only plants
c)
an animal that gets energy by eating both plants and animals
d)
an animal that makes its own energy through photosynthesis
4.
The shrew provides energy for the _______?
a)
cricket
b)
grasshopper
c)
frog
d)
snake
5.

Food webs usually contain a wide variety of organisms. Which statement can be used to describe all organisms in a food web?

a)

They can make their own food.

b)

They need a source of energy.

c)

They eat the remains of other organisms

d)

They eat the producers.

6.

How does a food chain illustrate the law of conservation of energy?

a)

It shows how energy stored in food moves from one organism to another.

b)

It shows how sunlight is converted into the matter making up organisms.

c)

It shows that the energy used by plants for photosynthesis disappears.

d)

It shows that energy is destroyed by the last animal in the chain.

7.

Which of the following organisms is an omnivore according to the food web?

a)

Wolves

b)

Deer

c)

Bears

d)

Skunks

8.
Organisms that look similar and can produce fertile offspring
a)
Species
b)
Fish
c)
Community
d)
Trees
9.
What may happen if the snowshoe hare was removed from the food web pictured?
a)
The insects in the habitat would increase.
b)
The shrew population would decrease due to being only hawk food source.
c)
The willow tree population would decrease.
d)
Foxes would dies due to no food source. 
10.
In the food web shown, the snail would be considered...
a)
primary consumer
b)
secondary consumer
c)
tertiary consumer
d)
producer
11.
Yucca flowers are pollinated by yucca moths. The moths lay their eggs in the flowers where the larvae hatch and eat some of the developing seeds. Both species benefit. 
a)
parasitism
b)
commensalism
c)
mutualism
12.
Mistletoe extracts water and nutrients from a spruce tree. The spruce tree is harmed. 
a)
parasitism
b)
commensalism
c)
mutualism
13.
 The stork uses it saw-like bill to cut up the dead animals it eats. As a result, the dead animal carcass is accessible to some bees for food and egg laying. The relationship neither harms nor benefits the stork.
a)
parasitism
b)
commensalism
c)
mutualism
14.

Hermit Crabs live in shells made and then abandoned by snails.

a)

Commensalism

b)

Parasitism

c)

Competition

15.
Two male Giraffes are fighting over the last green leaf of a tree that is dying.  
a)
Competition
b)
Mutualsim
c)
Predation
d)
Commensalism
16.
In a mutual relationship, both organisms are ________________. 
a)
hurt
b)
not effected
c)
harmed
d)
benefiting 
17.
Commensalism is where one organism is benefiting and the other organism is _____________________. 
a)
not effected
b)
helped
c)
harmed
d)
hurt
18.
In a parasitic relationship, one organism is ___________ and one organism is benefiting. 
a)
helped
b)
harmed
c)
not effected
d)
happy
19.
Where do all life forms get their energy?
a)
Earth's Core
b)
Water
c)
Plants
d)
The Sun
20.

The organisms in a food web can be classified based on how they get the energy they need. Which organism in this food web is a primary consumer?

a)

mouse

b)

snake

c)

fox

d)

hawk

21.

Which organism in this food web is a producer?

a)

hawk

b)

fox

c)

snake

d)

grass

22.

The graph below shows how the numbers of two different organisms in a forest changed over time. The changes in population sizes can be used to make inferences about the relationship between wolves and rabbits in this forest. Based on the information in the graph, what is the most likely relationship between these organisms?

a)

The relationship between wolves and rabbits is commensalism.

b)

Wolves are predators of rabbits.

c)

Rabbits and wolves rely on the same food source.

d)

Wolves and rabbits have a mutualistic relationship.

23.

A herbicide is a chemical that kills plants. Which best describes the effect of a herbicide being applied to all of the plants in a food web?

a)

All organisms would be affected.

b)

Only primary consumers would be affected.

c)

Producers and decomposers would be the only populations affected.

d)

Primary and secondary consumers would be affected, but tertiary consumers would not.

24.

The picture below shows a mangrove ecosystem. In this ecosystem, pelicans nest in mangrove trees. Crabs consume mangrove leaf litter. Snails consume algae on mangrove roots. How would a decrease in mangrove trees in this ecosystem affect the other living things there?

a)

Snail, crab, and pelican populations would decrease.

b)

Snail and crab populations would decrease while pelican populations would increase.

c)

Pelican populations would decrease while snail and crab populations would increase.

d)

Snail, crab, and pelican populations would increase.

25.

What is the hawk in the food web?

a)

Producer

b)

Primary consumer

c)

Secondary consumer

d)

Tertiary consumer

26.
Any thing or organism that regulates the size of a population of another organism is known as __________.
a)
a limiting measure
b)
a limiting factor
c)
factorization
d)
materialization of precipitation
27.
If a disease destroying barley plants in a field swept through an ecosystem, what would happen to the barley eating bird population in the the field ?
a)
The bird population would stay the same
b)
The bird population would infinitely increase
c)
The bird population would decrease
28.
What would happen if the population of hawks suddenly increased? How would it affect the other organisms in the ecosystem?
a)
The snakes would decrease due to more hawks eating them
b)
All of the population of organisms would increase
c)
The biotic factors in the ecosystem would increase
d)
The hawks predators would decrease
29.
Temperature, light, air, water, and soil are all  _____  parts of the environment
a)
alive
b)
biotic 
c)
abiotic
d)
living
30.

What is a limiting factor?

a)

Factors that always increase a population

b)

Factors that always decrease a population

c)

Resources that are unlimited

d)

Factors/resources that limit how many organisms can live in an area at the same time

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