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Ecology Practice Test

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9th grade Biology Quiz on Ecology Practice Test, created by Jessica Dewald on 17/02/2019.
Jessica Dewald
Quiz by Jessica Dewald, updated 2 months ago
Jessica Dewald
Created by Jessica Dewald about 5 years ago
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Resource summary

Question 1

Question
What do we call the movement of organisms into a given area from another area?
Answer
  • population shift
  • immigration
  • emigration
  • carrying capacity

Question 2

Question
What plant species in the figure below represents a pioneer species if the area is undergoing primary succession?
Image:
Population Ecology Test Question 1 (8) (binary/octet-stream)
Answer
  • shrubs
  • grasses
  • lichens
  • deciduous trees
  • coniferous trees

Question 3

Question
Which of the following is a density-independent limiting factor?
Answer
  • seasonal cycles
  • competition
  • crowding
  • disease

Question 4

Question
Which part of the graph represents exponential growth for the population?
Image:
Population Ecology Test Question 1 (binary/octet-stream)
Answer
  • A
  • B
  • C
  • D

Question 5

Question
The graph represent _____ growth, and rabbits are ___ reproductive strategists.
Image:
Population Ecology Test Question 1 (9) (binary/octet-stream)
Answer
  • logistic, R
  • exponential, R
  • logistic, K
  • exponential, K

Question 6

Question
If the humans eliminate a predator, how would this initially affect the number of prey animals?
Answer
  • The number would rapidly decrease
  • The number would increase
  • The number would remain constant
  • The number would slowly decrease

Question 7

Question
Which of the following in not one of the factors that plays a role in population growth rate?
Answer
  • population density
  • immigration
  • death rate
  • emigration

Question 8

Question
Which statement best describes the fruit fly population in the part of the curve labeled X in the graph shown in the figure below.
Image:
Population Ecology Test Question 1 (1) (binary/octet-stream)
Answer
  • The fruit fly population can no longer mate and produce fertile offspring
  • The fruit fly population has reached the number of organisms that habitat can support
  • The fruit fly population is no longer able to adapt to the changing environmental conditions
  • The fruit fly population has an average lifespan of 36 days

Question 9

Question
Which meadow has the greatest biodiversity?
Image:
Population Ecology Test Question 1 (6) (binary/octet-stream)
Answer
  • Meadow A
  • Meadow B
  • Meadow C
  • Not enough information

Question 10

Question
The human population experienced exponential growth after....
Answer
  • the industrial revolution began
  • the bubonic plague occurred
  • agriculture began
  • plowing and irrigation began

Question 11

Question
What is one difference between primary and secondary succession?
Answer
  • secondary succession begins on soil, and primary succession begins on bare rock
  • Primary succession modifies the environment, and secondary succession does not
  • Primary succession is slow, and secondary succession is rapid
  • secondary succession begins with lichens, and primary succession begins with trees

Question 12

Question
When individuals in a population reproduce at a constant rate, it is called...
Answer
  • exponential growth
  • growth density
  • logistic growth
  • multiple growth

Question 13

Question
Why does the white-tailed deer population drop when carrying capacity is exceeded?
Image:
Population Ecology Test Question 1 (12) (binary/octet-stream)
Answer
  • resources are too low to support the population
  • competition by other animals is greatly reduced
  • the height of edible plants exceeds the height of the deer
  • weather changes reduce the deer population

Question 14

Question
The graph shows the average number of rabbits and coyotes in an area over time. Which conclusion is best supported by these data?
Image:
Population Ecology Test Question 1 (7) (binary/octet-stream)
Answer
  • The number of coyotes will be greater than the number of rabbits within a ten-year period
  • The number of rabbits will decrease during summer months
  • The rabbit population obtains energy by consuming young plants
  • The coyote population is influenced by the available number of rabbits

Question 15

Question
A herd of deer lives in an area of Northwest Ohio between two major interstate highways. As the population continues to grow, several deer die from starvation. This example in which type of limiting factor?
Answer
  • density-independent
  • density-dependent
  • abiotic factor
  • none of the above

Question 16

Question
When organisms move out of the population, this is known as ....
Answer
  • emigration
  • immigration
  • abandonment
  • succession

Question 17

Question
From the graph, determine which time period are birth and death rate equal?
Image:
Population Ecology Test Question 1 (binary/octet-stream)
Answer
  • A
  • B
  • C
  • D

Question 18

Question
There are 150 Saguro cactus plants per square kilometer in certain area of Arizona desert. To which population characteristic does this information refer?
Answer
  • geographic distribution
  • growth rate
  • population density
  • age structure

Question 19

Question
The graph shows the interactions of two populations. Population A is made up of living animals. The members of population B feed on these animals. The members of population B are most likely...
Image:
Population Ecology Test Question 1 (4) (binary/octet-stream)
Answer
  • autotrophs
  • prey
  • parasites
  • predators

Question 20

Question
An undisturbed squirrel population grows until its carrying capacity is reached. Which of the graphs below best resembles this squirrel population?
Image:
Population Ecology Test Question 1 (5) (binary/octet-stream)
Answer
  • A
  • B
  • C
  • D

Question 21

Question
The graph below shows the interaction of the wolf and moose populations on Isle Royale. If the moose population continues to decrease, the wolves' food supply will decrease. What will most likely happen to the wolf population as a result?
Image:
Population Ecology Test Question 1 (2) (binary/octet-stream)
Answer
  • decreases
  • increase slightly
  • remain the same
  • increase greatly

Question 22

Question
What must occur in a population in order for it to grow?
Answer
  • the birth rate and death rate remain the same
  • the birth rate becomes lower than the death rate
  • the birth rate stays the same and the death rate increases
  • the birth rate becomes higher than the death rate

Question 23

Question
Which of the following has caused the human population growth rate to increase?
Answer
  • a shift towards an older population
  • famine and drought
  • the frequency and severity of common diseases
  • improvements in nutrition, medicine, and sanitation

Question 24

Question
The table shows how several different populations have changed over a one year time span. Look at each population and determine which population has had an overall increase?
Image:
Population Ecology Test Question 1 (10) (binary/octet-stream)
Answer
  • population A
  • population B
  • population C
  • population D

Question 25

Question
On what trophic level would you find organisms that use the sun's energy directly to make their own food?
Answer
  • 1
  • 2
  • 3
  • 4

Question 26

Question
The ultimate source of energy for all organisms in life is:
Answer
  • water
  • oxygen
  • nitrogen
  • the sun

Question 27

Question
An animal that only eats the flesh of another animal is called a:
Answer
  • producer
  • herbivore
  • carnivore
  • omnivore

Question 28

Question
In the following food chain, which organism is the secondary consumer? grass ------> rabbit -------> snake ------> hawk
Answer
  • grass
  • rabbit
  • snake
  • hawk

Question 29

Question
In the above food chain, the snake is an example of a:
Image:
Ecology Exam Practice Quiz Question 1 (binary/octet-stream)
Answer
  • producer
  • primary consumer
  • secondary consumer
  • tertiary consumer
  • quaternary consumer

Question 30

Question
Which of the following organisms is an autotroph?
Answer
  • algae
  • bear
  • cheetah
  • fish

Question 31

Question
The image represents what type of relationship?
Image:
Gukh (binary/octet-stream)
Answer
  • competition
  • mutualism
  • parasitism
  • predator/prey

Question 32

Question
In the terrestrial food web above, what would be the effect of a farmer introducing a rat poison into the ecosystem that is toxic to rats and mice?
Image:
Hfkwaeh (binary/octet-stream)
Answer
  • the population of fox would decrease
  • the population of grasshoppers would decrease
  • the population of hawks would increase
  • the population of rabbits would decrease

Question 33

Question
Which of the following is an abiotic factor in an ecosystem?
Answer
  • bird
  • tree
  • rock
  • deer

Question 34

Question
Sea anemones contain a venom that is used to sting and paralyze their prey. The clownfish contains an enzyme in their scales that makes them immune to the venom. This allows them to freely live in the sea anemone without being harmed providing the clownfish with protection. This is an example of what type of relationship?
Answer
  • predator-prey
  • mutualism
  • commensalism
  • parasitism

Question 35

Question
Lichen is a symbiotic decomposer that attaches itself to trees and slowly breaks them down. They obtain nutrients from the tree, allowing them to survive and reproduce while the tree slowly dies. What type of relationship is this?
Answer
  • predator-prey
  • mutualism
  • parasitism
  • competition

Question 36

Question
Mushrooms and other fungi are responsible for breaking down dead organic matter. In the ecosystem, they are called:
Answer
  • producers
  • consumers
  • decomposers
  • scavengers

Question 37

Question
The amount of energy that is passed from one organism to the next in a food chain is:
Answer
  • 5%
  • 10%
  • 15%
  • 20%

Question 38

Question
In an energy pyramid, the bottom level represents:
Answer
  • consumers
  • producers
  • scavangers
  • decomposer

Question 39

Question
In an energy pyramid, the lowest level has:
Answer
  • less energy than the top level
  • less energy than the second level
  • more energy than the top level
  • the same amount of energy is available to a consumer

Question 40

Question
Decomposers are important to ecosystems because they:
Answer
  • are at the highest level of the energy pyramid
  • change simple compounds into more complex ones
  • convert light energy into sugars through photosynthesis
  • make nutrients available for producers to use

Question 41

Question
All the following are examples of limiting factors for a population EXCEPT:
Answer
  • space
  • food
  • time
  • weather

Question 42

Question
As populations grow individuals tend to compete for
Answer
  • resources
  • stress
  • independence

Question 43

Question
An animal that eats only plants is a:
Answer
  • primary consumer
  • secondary consumer
  • tertiary consumer
  • primary producer

Question 44

Question
Which of the following is an example of an ecosystem?
Answer
  • air, water, grass, badgers
  • air, water, sunlight, and soil
  • hawks, mouse, badgers, and eagles
  • grass, trees, bushes, and flowers

Question 45

Question
The plant receives 3456.8 kcal of energy from the sun. How much energy will the snake end up with? [blank_start]3.4568[blank_end] kcal of energy.
Image:
Ecology Exam Practice Quiz Question 1 (binary/octet-stream)
Answer
  • 3.4568

Question 46

Question
Biomagnification is when toxins, such as mercury and DDT, increase in the amount present in an organism as you move up in the food chain/web.
Answer
  • true
  • fasle

Question 47

Question
Which organism in the food chain would contain the highest levels of DDT poisoning?
Image:
Ecology Exam Practice Quiz Question 1 (binary/octet-stream)
Answer
  • snake
  • cricket
  • plant
  • owl

Question 48

Question
Two closely related species of birds live in the same tree. Species A feeds on ants and termites, while species B feeds on caterpillars. The two species coexist successfully because
Answer
  • each occupies a different niche
  • they interbreed
  • they use different methods of reproduction
  • birds compete for food
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