WorksheetsKeystone Review Basic 8 - Ecology
Total questions: 42
Worksheet time: 23mins
Which sequence best orders ecological categories from the one with the fewest number of individuals to the one with the greatest number of individuals?
ecosystem, population, community, biome
population, community, ecosystem, biome
biome, population, community, ecosystem
community, biome, population, ecosystem
Which set of ecological organization levels is most likely to contain the largest variety of species?
multiple biomes in the biosphere
multiple ecosystems in a biome
multiple individuals in a population
multiple populations in a community
Which factor most likely limits the number of levels an energy pyramid can have?
biomass of the top-level organism
predation by the top-level organisms
energy loss between each level
organisms being decomposed at each level
The mass of living organisms in a given area or ecosystem at a given time
Bioenergetics
Decomposers
Energy pyramid
Biomass
Which statement best describes a relationship between a biotic and an abiotic part of this ecosystem?
Rain falls and runoff fills the pond
The trees use energy from the sun for photosynthesis
The plants in the pond are eaten by the turtles and ducks
Decomposers break down the dead tree
Which statement best distinguishes between biotic and abiotic factors?
Biotic factors are alive
Abiotic factors are dead
Biotic factors are, or were alive
Abiotic factors were never alive
Biotic factors affect living organisms
Abiotic factors affect non-living parts of an ecosystem
Biotic factors are eukaryotes
Abiotic factors are prokaryotes
Which food chain best describes how energy flows in an ecosystem that includes lizards?
foxes → lizards → insects → plants
plants → insects → lizards → foxes
plants ← insects ← lizards ← foxes
foxes ← lizards ← plants ← insects
If the amount of energy at the producer level receive 90,000 kilocalories (kcal) of energy from the sun, about how much energy would be available to secondary consumers in this ecosystem?
9,000,000 kcal
900 kcal
9,000 kcal
900,000 kcal
Identify the primary consumer in this community
phytoplankton
zooplankton
small fish
large fish
Determine the amount of energy that will end up as biomass in the large fish
60,000 kJ/m2
6,000 kJ/m2
600 kJ/m2
60 kJ/m2
Which of the following is NOT an explanation why amount of energy at each trophic level reduced by approximately 10%?
It was lost in respiration
It was lost as waste
It was lost as heat
It was used by the organism
It moves into increasingly larger organisms
Which two of the following are terrestrial biomes?
Marine
Freshwater
Deciduous Forest
Desert
Short summers, long dry winters. Evergreen trees, moose, foxes, bears.
Temperate Forest
Tundra
Boreal Forest/Taiga
Grassland
short summers, cold winters. Permanently frozen layer of soil and ice. Small shrubs, grasses, wolves, polar bears, caribou.
Tundra
Taiga
Desert
Savanna
warm, wet summers, cool winters. Deciduous trees, deer, rabbits, bears.
Grassland
Tropical rainforest
Temperate forest
Savanna
Two features of a grassland are
lack of rain, dry
Grasses, shrubs, prairie dogs, coyotes
warm wet summers, cool, wet winters
Deciduous trees, mountain goats, caribou
In a deciduous forest, trees ...
are adapted for sandy soil
lose their leaves in winter
are evergreen
are scattered and generally short due to the dry summers
Two statements that are true about producers are that they are...
also called autotrophs
also called heterotrophs
organisms that make their own food
organisms that need to eat other organisms for energy
Two statements that are true about consumers are that they are...
also called autotrophs
also called heterotrophs
organisms that make their own food
organisms that need to eat other organisms for energy
Each level of this food chain can be called a ...
Community
Trophic level
Population
Consumer
___ are organisms that break down dead organisms and release the nutrients from the dead matter into the environment around them
Decomposers
Scavengers
Producers
Prokaryotes
Heterotrophs that release nutrients from dead organisms back into the air or soil are called
Decomposers
Primary consumers
Producers
Carnivores
Many interrelated food chains make up a(n)
Trophic level
Pyramid of biomass
Energy pyramid
Food Web
An environmental condition that restricts the growth, abundance, or distribution of a population or organism within an ecosystem.
Competition
Carrying Capacity
Limiting Factor
Exponential factor
The pattern exhibited by this graph suggests a(n)
Coevolutionary relationship
Predator-Prey relationship
Mutualistic relationship
Divergent evolution
Symbiotic relationship where both species benefit
Parasitism
Mutualism
Commensalism
Symbiotic relationship where one species benefits and the other loses nutrients
Parasitism
Mutualism
Commensalism
Symbiotic relationship where one species benefits and the is not affected either way
Parasitism
Mutualism
Commensalism
Organisms are trying to get the same limited resources
Competition
Coevolution
Mutualism
Predator-prey relationship
Organisms that have moved (or been moved) from one location to another can be called
Nonnative species
Migrant species
Extinct species
Founder Effect
Which term is not part of the water cycle
Denitification
Transpiration
Respiration
Precipitation
In the carbon cycle, the two primary ways that carbon enters the atmosphere are
Respiration
Combustion
Transpiration
Nitrification
In the carbon cycle, the primary way that carbon leaves the atmosphere is
photosynthesis
lightning strikes
combustion
nitrogen fixation
The primary way that nitrogen moves from the atmosphere into living things is through ____
Denitrification by bacteria
Nitrogen fixation by bacteria
Respiration
Decomposition
a natural process that traps heat in the Earth's atmosphere, warming the planet
Greenhouse effect
Global warming
Climate Change
Ozone layer
Results from the increasing concentration of carbon dioxide and other greenhouse gases that trap heat in the earth's atmosphere
Global warming
Ozone depletion
Deforestation
Acid rain
Which letter correctly labels the carrying capacity of the population?
A
B
C
D
All of the following are advantages of group behavior EXCEPT
Protection from predators
Reduced competition
Cooperative hunting
Social learning
A bird building a nest and laying eggs is an example of a(n)
foraging behavior
symbiotic relationship
individual behavior
group behavior
A generalized forager is an animal that ...
eats only a very specific type of food
avoids competition by locating food alone
works together with other animals to locate food
consumes a wide range of food sources
Which of the following is NOT an advantage of social grouping?
Increase acess to mates
Help protect young from predators
Increase chance of finding food
Allow members to share the workload
Reduce the spread of diseases and parasites
The two primary reasons that some animals migrate are:
Search for food
Find mates
Provide protection to the group
Find a safe location
