Download Ecology Quiz 1

Ecology Quiz 1
Name:
1.
2.
Date:
In a desert environment, cactus wrens often build
their nests in cholla cacti to avoid predators. This
behavior does not hurt the cacti. Which type
of relationship do cactus wrens and cholla cacti
demonstrate?
A.
competitive
B.
C.
mutualism
D. parasitism
3.
commensalism
Which example shows a relationship between a
living thing and a nonliving thing?
A.
An insect is food for a salmon.
B.
Water carries a rock downstream.
C.
A tree removes a gas from the air.
D. A ower makes food for a butter y.
The graph below shows the population of mice
living in a certain area over a fteen-year period.
4.
Which numeral on the graph points to a time when
the birth rate exceeded the death rate of the mice?
A.
I
B.
II
C.
III
D. IV
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Salt concentration, water temperature, plankton,
and the whale shark might all be used in a
description of an ocean
A.
climate.
B.
food web.
C.
ecosystem.
D. population.
5.
The graph below shows changes in a caribou
population over time.
7.
Rabbits introduced into Australia over 100 years
ago have become a serious pest to farmers. Rabbit
populations increased so much that they displaced
many native species of plant eaters. What is
the most logical explanation for their increased
numbers?
A.
Rabbits have a high death rate.
B.
There are few e ective predators.
C.
Additional rabbit species have been introduced.
D. There is an increase in rabbit competitors.
Based on the graph, which of the following is a
possible explanation for the stabilization of the
caribou population?
A.
an equal number of deaths and births
B.
an unequal number of deaths and births
C.
an equal number of immigrants and births
D. an unequal number of immigrants and deaths
8.
6.
Scientists found that, over a period of 200 years, a
mountain pond was transformed into a meadow.
During that time, several communities of organisms
were replaced by di erent communities. Which
of these best explains why new communities were
able to replace older communities?
A.
The original species became extinct.
B.
Species in the older community died from old
age.
C.
The abiotic characteristics of the habitat
changed.
If a paleontologist nds fossils of many di erent
species existing in the same area at approximately
the same time, the paleontologist can conclude that
the ecosystem in this area had a high degree of
A.
climatic variation.
B.
episodic speciation.
C.
biological diversity.
D. geographic isolation.
D. Diseases that killed the older organisms
disappeared.
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Ecology Quiz 1
9.
In the longstanding war between coyotes and
sheep ranchers in New Mexico, studies show that
coyotes kill sheep and the percentage of sheep
lost from herds in areas where coyotes have been
exterminated is about the same as the percentage
lost in areas where coyotes are still present.
11.
Coyotes were protecting sheep.
B.
The sheep died from overcrowding.
C.
Another predator was killing sheep.
Fox
Bear
What kind of habitat would all of these animals
live in?
What is the most likely explanation for the
similarity in the percentage of sheep lost in both
areas?
A.
Jack Rabbit
A.
Forest
B.
City
C.
Ocean
D. Coyotes were preying on sick or weak sheep.
12.
10.
A.
move to other areas that had trees.
B.
learn to live in the long grass.
C.
Plants and animals are alive and have
characteristics that make them di erent
from each other and non-living things.
nd seeds and nuts to plant more trees.
D. build their nests on the ground.
13.
In the chart below, list three living things and
three non-living things to this picture.
Living
If farmers cleared a large forest and planted grass,
the squirrels that had lived in the forest would
most likely
Non-living
A wetland was drained to build a mall. Two years
later, there were no more toads in that area. Why
did the toads disappear?
A.
The toads were destroyed by the construction
equipment.
B.
The toads died because toads cannot breathe
out of water.
C.
The toads were frightened and went into the
woods.
D. The toads got their food from the wetland
ecosystem.
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Ecology Quiz 1
14.
How does too much shing in an area a ect its
ecosystem?
A.
The sh will lay many more eggs to replace
the sh that were caught.
B.
Organisms that eat the sh could become
endangered due to starvation.
C.
Organisms that the
endangered.
15.
Use the pictures below to answer the following
question.
sh eat will become
D. People could eat too many sh and become
ill.
Which ecological process is illustrated in this
sequence of pictures?
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A.
migration
B.
succession
C.
nitri cation
D. precipitation
Ecology Quiz 1
16.
A wetland was drained to build a mall. Two years
later, there were no more toads in that area. Why
did the toads disappear?
18.
A.
an insect that lives and feeds on the body of
an alligator
A.
The toads were destroyed by the construction
equipment.
B.
B.
The toads died because toads cannot breathe
out of water.
an ant that lives on a plant and defends the
plant from other insects
C.
C.
The toads were frightened and went into the
woods.
a bird that migrates to follow the movements
of the butter ies that it eats
D. a deer that eats one kind of plant, which
allows another kind of plant to grow in its
place
D. The toads got their food from the wetland
ecosystem.
17.
Which relationship is mutualistic?
Use the desert picture below to answer the
question.
19.
Which factor most likely limits the desert's
carrying capacity for plant life?
A.
the number of herbivores
B.
the amount of sunlight
C.
the availability of water
An ocean, a forest, and a grassy meadow are each
examples of a complete ecosystem. Complete
ecosystems contain only
A.
animals.
B.
rocks and water.
C.
living and nonliving things.
D. populations of plants and animals.
D. the availability of land
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Ecology Quiz 1