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- Q1
All the following are abiotic factors except...
Temperature
Precipitation
Parasites
Oxygen
30sBIO.8.a - Q2
Categorize the following factors as biotic or abiotic
Users sort answers between categoriesSorting60sBIO.8.a - Q3
What is the carrying capacity of this population?
1500
2500
2000
250
30sBIO.8.a - Q4
Which graph shows a population that has unlimited resources and no predators?
30sBIO.8.a - Q5
Which of the following would most likely happen in this ecosystem if an algae bloom occurred, covering the entire surface of the pond?
The population of aquatic plants would decrease because they wouldn't have enough sunlight
The population of frogs would increase because they would have more food
The population of dragonflies would increase because they would have fewer predators
The ecosystem would be unaffected since algae isn't a part of its food web.
30sBIO.8.a - Q6
The carrying capacity of a biological species in an environment is the maximum population size of the species that the environment can sustain indefinitely, given the food, habitat, water, and other necessities available in the environment. What factors would increase a carrying capacity for a population? Select all that apply.
Increase in Food SourcesIncrease in Disease
Increase in Competition
Habitat Loss
Access to Clean Water60sBIO.8.a - Q7
Which example describes or illustrates how a density-dependent limiting factor can affect a forest ecosystem?
A forest fire forces many animals to move to new habitats.
An earthquake causes the death of many animals in the forest.
A few poachers wipe out the population of an animal in the forest.
A disease causes death of many animals in the forest.
30sBIO.8.a - Q8
Species A and B live in the same ecosystem. Which is a valid inference you can make about their relationship based on this graph?
Species A is a predator of species B
Species A and B mutually benefit each other
There is no relationship between species A and B
Species B is a predator of species A
30sBIO.8.a - Q9
Match each type of symbiotic relationship to its example:
Users link answersLinking120sBIO.8.a - Q10
What two gases are exchanged in photosynthesis and cellular respiration?
Helium
Nitrogen
OxygenHydrogen
Carbon Dioxide30sBIO.8.b - Q11
Sort each process in the carbon cycle based on whether is removes or releases carbon dioxide in the atmosphere
Users sort answers between categoriesSorting60sBIO.8.b - Q12
The loss of which of the following organisms would have the greatest effect on the nitrogen cycle?
Bacteria
Trees
Insects
Mammals
30sBIO.8.b - Q13
According to the diagram, which process removes nitrogen from the atmosphere and stores it in the soil?
Nitrogen fixation
Ammonification
Denitrification
Nitrification
30sBIO.8.b - Q14
In the following food web, which organisms are primary consumers? Select all that apply.
Fruit FliesPythons
ButterfliesDragonflies
GrasshoppersFlowering Plants
60sBIO.8.b - Q15
Which conclusion is best supported by the ecological pyramids for the two food chains pictured?
Primary consumers outnumber secondary and tertiary consumers and have more biomass
Secondary consumers in aquatic food chains have the same amount of energy as primary consumers in terrestrial food chains.
There are always more producers than primary consumers in a food chain.
There is more grass on earth than phytoplankton.
60sBIO.8.b
