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WorksheetsBiology Semester Exam Review
Total questions: 55
Worksheet time: 1hrs 8mins
Which line represents a population that reaches a carrying capacity?
Line 4
Line 3
Line 1
Line 2
Which of the following might be a density-dependent (dependent of the amount of perch) limiting factor for a group of perch in a lake?
Soil quality
water pH
Amount of prey
Surrounding Temperature
Which is an abiotic factor that would affect the ability of a species of tree to survive in a particular habitat?
Type and number of rabbits in the area
How many plants are in the area
How much sunlight is available
How many different species in the area
The importance of a keystone species that acts as a top predator within a community may be to
competitively exclude other predators from the community.
maintain species diversity by keeping prey species populations in balance
increase the relative abundance of the other predators.
create imbalance among species in the community.
What type of species interaction is modeled in the graph above?
Density independent factors
Logistic Growth
Predator/Prey relationship
Exponential Growth
Plants get their food from photosynthesis, plants take in _____________ and release ___________.
To take in CO2 and release O2
It is the stomach of the plant
To take in glucose and release CO2
Plants do not have stomata
What is species diversity?
The number of resources available
The number of rabbits in the ecosystem
How much sunlight the ecosystem recieves
The number of different species in an ecosystem
Carbon is used in photosynthesis, and many other life processes. Is there more carbon being created?
Yes, from cars.
No, the plants are using it.
Yes from humans
No, slow acting carbon is being turned into fast acting carbon.
Why is biodiversity so important?
Differences are beautiful, so that is important.
It is not that important.
It is useful in photosynthesis.
The more biodiverse and ecosystem is, the healthier it is.
In the food web above, which of the organisms X, Y, or Z, is a primary consumer?
Z
Grass
Both X and Y
None of the above
What do the arrows in the diagram above indicate?
A common food chain
Flow of energy
Trophic levels
All of these
Organisms at the first trophic level in a food pyramid are:
Herbivores
Carnivores
Producers
Decomposers
Which of the following are ways humans are a threat to biodiversity?
Overpopulation
Over harvesting
Global warming
Deforestation
All of the above
An organism that must consume another organism to get its energy.
Producer
Consumer
Autotroph
All of the above
Which of the following limiting factors is intensified as the population size increases?
unseasonable hot temperatures
tornado
disease
fire
Graph A shows the increase in sewage waste and a decrease in oxygen content of a lake. Graph B shows population changes of four species of fish in the lake over the same time period.
Which of the following is a plausible conclusion drawn from the above data?
The walleye were more tolerant of the water quality changes and the population increased from lowered competition from the carp
The carp were tolerant of the water quality changes. Therefore, the population was able to grow due to decreased competition.
The trout are intolerant of water quality changes but the population remained stable.
The whitefish were intolerant of water quality changes and the population grew.
What impact does deforestation have on the carbon cycle?
Increase in the amount of CO2 in the atmosphere
Decrease in the amount of CO2 in the atmosphere
Increase in the amount of cellular respiration performed by autotrophs
Deforestation has no impact on the carbon cycle
Identify the following chemical formula: 6CO2 + 6H2O Sunlight ——> C6H12O6 + 6O2
Newton's 1st Law
Fermentation
Photosynthesis
Protein Breakdown
Which of the following is the correct equation for Photosynthesis?
C6H12O6 (glucose)+ 6O2 + 36 ADP (depleted ATP) + 36 Pi (phosphate groups)→ 6CO2 + 6H2O + 36 ATP
E = MC raised to the 2nd power
F-E+V=2
6CO2 + 6H2O Sunlight as activation energy ———> C6H12O6 + 6O2
Which of the following are characteristics of all key stone species?
They maintain the integrity of the ecosystem
They reduce the integrity of the ecosystem
They are large in size and overall number
They are small in size and overall number
Which line represents a population growing at an exponential rate?
Line 1
Line 2
Line 3
Line 4
The ultimate original source of energy for almost all living things on Earth is
Glucose
Water
The Sun
CO2
Variation in a population leads to increased likelihood of success during environmental changes.
Areas of high diversity tend to show an increase in average organism size.
Variation in a population leads to increased likelihood of success during environmental changes.
Fewer variations cause advantageous genes to become stronger and more frequent, increasing a species’ chances of survival.
Variation decreases the variety of beauty in nature.
What are the PRODUCTS of Photosynthesis?
Protein and oxygen
Glucose and Carbon Monoxide
Carbon dioxide and Oxygen
Glucose and Oxygen
What is carrying capacity?
Any resource that can run out in an area.
The amount of biomass a specific biome requires to become stable after a natural disaster.
The maximum number of organisms that can be supported in a given habitat.
A measure of how dense a population is.
Days Cm
1 1.0
2 3.5
3 5.0
4 8.5
Abiotic factors are nonliving things in an ecosystem. Select the list that only contains abiotic factors.
variety of food sources, annual precipitation, and number of decomposers
the density of predators, water depth, types of parasites
precipitation amount, number of prey species, plant types
water temperature, amount of sunlight, soil type
Which point in this graph represents exponential growth?
Point E
Point A
Point B
Point C
The graph represents _____ of a population.
logistic growth model
exponential growth model
Which point on the graph best represents the carrying capacity?
Letter A
Letter C
Letter E
Letter D
In which month(s) did the Cottontail Rabbits reach their carrying capacity?
January and February
March and May
April and January
April and May
Which of the following is density-independent limiting factor?
disease
competition
earthquake
predation
An Ecosystem is...
the interaction between biotic and abiotic factors in an environment
matter cycling between nonliving factors in an environment
energy flow from the sun through animals
the interactions of living things
A producer in an ecosystem gets its energy by:
consuming, or eating, other organisms
breaking down dead organisms
drinking water
using the sun to make its own energy
A decomposer in an ecosystem gets its energy by:
consuming, or eating, other organisms
breaking down dead organisms
drinking water
using the sun to make its own energy
An organism consumes fallen tree logs and dead grasses. It is a...
consumer (herbivore)
producer
decomposer
consumer (omnivore)
An example of an ORGANISM is...
herd of deer
a hummingbird
pride of lions
all the dandelions in a park
An example of a COMMUNITY is...
an apple tree
all the apple trees in an orchard
the apple trees, bees, grasses, and birds in an orchard
Which is NOT an example of a POPULATION?
a herd of zebra in a savanna
all the dandelions in your yard
a pond dries up due to drought
the bees living in a hive
Which of the following is an example of a BIOTIC LIMITING FACTOR?
fire
disease
drought
heat wave
Plants, algae, and phytoplankton can be described as a(n)...
producer
consumer
herbivore
host
