Ecosystem & Biomes
Nutrient Cycle
Productivity
Food Web & Chains
100
This biome contains plants that are adapted to prevent water loss due to the low average rainfall and high temperatures year-round.
A. Savanna
B. Boreal forest
C. Desert
D. Tropical rain forest
C. Desert
100
It is mostly found in rocks and sediments and is released through weathering and erosion.
A. Phosphorus
B. Nitrogen
C. Carbon
D. Water
A. Phosphorus
100
Which is a biotic factor?
A. Producers
B. pH
C. Energy
D. Humidity
A. Producers
100
The percentage of usable energy that is transferred from one trophic level to the next
A. Increases
B. Decreases
C. Stays the same
D. None of the above
B. Decreases
200
This biome is characterized by long dry seasons and is dominated by grasses, shrubs, and grazing animals.
A. Savanna
B. Boreal forest
C. Desert
D. Tropical rain forest
A. Savanna
200
A positive feedback loop occurs
A. when a system responds to a change by returning to its original state
B. when a system is in a steady state
C. When feedback into a system decreases a rate of response
D. When feedback into a system increases a rate of response
D. When feedback into a system increases a rate of response
200
A tapeworm lives in the small intestines where it feeds and grows, robbing the human of essential nutrients. This is a _____ type of relationship.
A. Commensalism
B. Symbiotic
C. Mutualism
D. Parasitism
D. Parasitism
200
This organism synthesizes its own food from inorganic substances using light or chemical energy.
A. Secondary Consumer
B. Omnivore
C. Autotroph
D. Heterotroph
C. Autotroph
300
This biome is found in shallow waters off the coastline and is Earth's most biologically diverse marine biome.
A. Rivers
B. Coral reefs
C. Open ocean
D. Freshwater wetlands
B. Coral reefs
300
In the diagram below, which process is illustrated by the downward arrows show the conversion of nitrogen gas into usable forms available to producers?
A. Nitrogen assimilation
B. Nitrogen fixation
C. Photosynthesis
D. Weathering
B. Nitrogen fixation
300
The total rate of photosynthesis in a given area.
A. Primary productivity
B. Gross primary productivity
C. Net primary productivity
D. Cellular respiration
B. Gross primary productivity
300
In reef ecosystems, corals have microalgae living inside them. The algae supply the corals with nutrients, and the coral give shelter to the algae. Which of the following interactions best describes the relationship between the corals and algae?
A. Competition
B. Predation
C. Parasitism
D. Mutualism
D. Mutualism
400
Where is the majority of fresh water found on Earth?
A. Groundwater
B. Lakes
C. Ice caps and glaciers
D. Oceans
C. Ice caps and glaciers
400
Which biogeochemical cycle includes the process of buffering ocean pH and photosynthesis as shown in the diagram.
A. The nitrogen cycle
B. The phosphorus cycle
C. The carbon cycle
D. The potassium cycle
C. The carbon cycle
400
Which of the following best describes a symbiotic relationship?
A. Striped bass and bluefish eat the same variety of mackerel.
B. Mountain lions feed on white-tailed deer.
C. Intestinal bacteria inhabit the gut of humans.
D. Marsupial animals carry their young in a pouch.
C. Intestinal bacteria inhabit the gut of humans.
400
Which of the following trophic levels represents a primary producer in an aquatic food chain?
A. Phytoplankton
B. Herbivorous zooplankton
C. Carnivorous zooplankton
Baleen whale
A. Phytoplankton
500
An ecosystem is a location on Earth that includes
A. Only biotic components
B. Only abiotic components
C. Positive and negative feedback loops
D. Interacting biotic and abiotic components
D. Interacting biotic and abiotic components
500
Which of the boxes represents a carbon source?
A. A
B. B
C. C
D. D
D. D
500
Which of the following best describes an example of resource partitioning in an ecosystem?
A. Two different bird species feed from the same oak tree, one eats acorns, and the other eats insects in the bark.
B. A tick uses a white-tailed deer as its host, consuming the deer's blood as food.
C. Two individuals from the same population of barn owls hunt for the same species of mouse during the night.
D. A mason bee pollinates a variety of flowers in a botanical garden.
A. Two different bird species feed from the same oak tree, one eats acorns, and the other eats insects in the bark.
500
Which trophic level has the least available energy in kilojoules in this food web.
A. Phytoplankton
B. Herbivorous zooplankton
C. Baleen whale
D. Killer whale
D. Killer whale