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Ecology Review 2023 Flashcards | StudBud
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Ecology Review 2023
Ecology Review 2023
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Review for Ecology Exam.
Flashcards
37 cards
F
Practice quiz
P
Host live
L
Questions
37
Answers
1
With increased CO
2
levels, plants decrease their rate of ________ causing more ___________.
transpiration, precipitation
precipitation, transpiration
transpiration, runoff
precipitation, runoff
2
Biodiversity is important to human society because it
all the above
is a natural resource
provides food and goods
provides medicine
3
The number of organisms in an energy pyramid decrease as the trophic level ____________.
stays constant
changes unpredictably
decreases
increases
4
Which statement is incorrect about invasive species?
They are often competitively inferior.
In their introduced area, there are often no predators.
They usually cause harm to their introduced areas.
The populations often grow quickly.
5
Green plants are
producers/autotrophs
herbivores
omnivores
consumers/heterotrophs
6
What role do predators play in maintaining the balance of an ecosystem?
They are primarily responsible for the cross pollination of plants .
They ensure that energy cannot be transferred to the rest of the food web.
They are primarily responsible for the transfer of nutrients to the plant.
They ensure that the ecosystem is not stripped entirely of its vegetation.
7
All the interconnected feeding relationships in an ecosystem make up a
food chain
food web
food interaction
food network
8
An endangered species is
a diseased animal
a dangerous predator
all organisms at the top of the food chain
a group of organisms near extinction
9
All of the members of a particular species that live in one area are called a(an)
ecosystem
community
population
biome
10
Organisms fighting for resources is called what?
Parasitism
Mutualism
Predation
Competition
11
Which of the following is a density-independent limiting factor?
earthquake
predation
disease
parasitism
12
An organism that uses energy to produce its own food supply is called a(an)
autotroph
detrivore
heterotroph
consumer
13
The maximum number of individuals in a population that an ecosystem can support is known as the
exponential growth level
logistic growth level
carrying capacity
climax community
14
The combined portions of Earth in which all living things exist is called the ...
biome
biosphere
ecosystem
community
15
Organisms that obtain nutrients by breaking down dead and decaying plants and animals are called
producers
omnivores
decomposers
autotrophs
16
Which of the following descriptions about the organization of an ecosystem is correct?
Species make up populations, which make up communities
Species make up communities, which make up populations
Communities make up species, which make up populations
Populations make up species which make up communities
17
The process where plants take in CO
2
& H
2
O and transform these materials into glucose (sugar) and O
2
is called
decomposition
transpiration
respiration
photosynthesis
18
All of the following are limiting factors EXCEPT
competition
trophic levels
human disturbances
predation
19
One of the greatest threats today to biological diversity is
habitat destruction
ozone depletion
old-growth forests
monoculture
20
The Burmese python in the Florida Everglades is an example of which of the following:
A Biotic Factor
An Invasive Species
How humans have impacted the environment
All of the above
21
The organisms needed to ensure that living things can use the Nitrogen found in the atmosphere are
Planaria
Protozoans
Bacteria
Fungus
22
All of the following are threats to biodiversity EXCEPT
species preservation
biological magnification of toxic compounds
habitat fragmentation
invasive species
23
Which of the following has had a large negative impact on the environment?
Recycling programs
Development of conservation programs
The development of single use plastic products
Increasing awareness of endangered species
24
The highest level of energy in an ecosystem is found where?
Producers/Autotrophs
Secondary Consumer
Primary Consumer
Tertiary Consumer
25
Atmospheric carbon dioxide levels have
stayed constant
steadily declined
steadily increased
fluctuated widely
26
The coasts are at most risk of global climate change due to the effects of:
Decreased rainfall along the coasts causing droughts
Decreased spread of insect borne diseases
Increased tropical storm severity and rainfall
Increased levels of nitrogen and sulfur
27
Energy production of an autotroph is 2000 Kcal/m
2
/year. What amount of energy is available for the
secondary
consumer?
20 Kcal/m2/year
200 Kcal/m2/year
2000 Kcal/m2/year
20000 Kcal/m2/year
28
Increased atmospheric carbon dioxide emissions are causing which of the following issues:
Rising of global temperatures
All of the above
Sea level rise
Acidification of the ocean
29
A tick living on a dog and sucking its blood is an example of
Parasitism
Commensalism
Mutualism
Predation
30
River ecosystems rely on beavers' dams to divert water creating wetlands that allow life to thrive. Beavers are a
Keystone Species
Invasive Species
Endangered Species
Exotic Species
31
Which will allow for an increase in carrying capacity?
increase in diseases and parasites
increase in competition
habitat loss
increase in food sources and access to clean water
32
What is the original source of the energy in most ecosystems?
carbohydrates
water
carbon
sunlight
33
Energy decreases at each trophic level. The amount available for the next level is only ______% of the previous level.
100
75
10
30
34
Organisms that cannot make their own food and obtain energy from external sources are called
plants
consumers/heterotrophs
producers/autotrophs
thylakoids
35
The algae at the beginning of this food chain are
heterotrophs
autotrophs
decomposers
consumers
36
Which of the following ensure that chemicals are moved throughout the ecosystems?
Trophic Levels
Density-dependent factors
Nitrogen Cycle
Density-independent factors
37
A bird stalks, kills, and then eats an insect. Which ecological terms describe the bird?
carnivore, consumer
autotroph, herbivore
herbivore,decomposer
producer, heterotroph
