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WorksheetsUnit 1 Ecology
Total questions: 20
Worksheet time: 11mins
All primary consumers are
Herbivores
Carnivores
Detritivores
Omnivores
A bird stalks, kills, and then eats an insect. Based on its behavior, which ecological terms describe the bird?
Herbivore, decomposer
Producer, heterotroph
Carnivore, consumer
Autotroph, herbivore
Which type of pyramid shows the amount of living tissue at each trophic level in an ecosystem?
Numbers pyramid
Energy pyramid
Biomass pyramid
Food pyramid
In the food chain of "algae --> mosquito larvae --> frogs --> raccoons", algae are the
Consumers
Heterotrophs
Detritivores
Autotrophs
What is an explanation of why producers are always found at the lowest trophic level?
Producers are larger than consumers
Producers are found in fewer numbers than consumers
Consumers are eaten by a variety of producers
Producers capture light every
Which of the following is a good example of a decomposer?
Fungus
Vulture
Clam
Shrimp
At which stage in succession would you find the MOST pioneer species?
Beginning
Middle
End
There are no pioneer species in succession
Read each of the following statements, which best depicts the difference between primary and secondary succession?
Primary succession is the sequence of plants that colonize a new area, while secondary succession is the sequence of animals that move in later
Primary succession is the establishment of a new community in an existing ecosystem that was disturbed, while secondary succession is the establishment of a community in an area with no soil
Primary succession is the establishment of a community in an area with no soil, while secondary succession is the establishment of a new community in an existing ecosystem that was disturbed
Primary succession is the sequence of species that move in later
DDT was a highly effective insecticide developed in the 1940’s. In fact, DDT was so good at killing mosquitos and reducing malaria, that its inventor, Paul Muller, won the Nobel Prize. However, in the 1960’s, it was discovered that DDT is taken up by algae in the water, increasing in concentration at each step of the food chain, because the pesticide remains in the fat tissues of organisms.
The ecological problem that resulted from DDT use is called….
Biohazard
Eutrophication
Food chain disruption
Biomagnification
A forest burns down. What type of succession is most likely to happen next?
Primary succession
Climax community
Secondary succession
Tertiary succession
Which of the following is a cause of eutrophication?
Burning of fossil fuels in large cities
Excessive carbon dioxide in the atmosphere
Not recycling plastics
Excessive amounts of nitrates and phosphates in a freshwater system
Cougars are predators that often eat weakened or diseased animals. This is a description of the (a) of the cougars.
A group of Orca whales is an example of what?
Community
Ecosystem
Population
Biosphere
Fleas are insects that feed off of other organisms, which causes them to be harmed. Which of the following types of symbiosis is the most appropriate for this situation?
Mutualism
Commensalism
Predation
Parasitism
The portion of the Earth that supports the existence of living things is the
Community
Habitat
Biosphere
Niche
On ten acres of native forest there are 8 white-tailed deer, 7 coyotes, 45 armadillos, and 231 loblolly pine trees. Which population has the highest density?
White-tailed deer
Coyotes
Armadillos
Loblolly pine trees
To assess a population’s growth rate, an ecologist must know how many individuals are born, how many died, and how many have emigrated. What else must an ecologist know?
How many individuals find mates
How many individuals immigrate
How many individuals carry communicable diseases
How many individuals are young or old
Each of the following is an abiotic factor in the environment EXCEPT
Plants
Soil
Rain fall
Temperature
Which is a biotic factor that affects the population size in an ecosystem?
Average temperature of the ecosystem
Type of soil in the ecosystem
Number and kinds of predators in the ecosystem
Concentration of oxygen in the ecosystem
Which example BEST illustrates a community?
A single zebra
A tropical reef aquarium with many different types of fish and corals
A heard of bison living in Yellowstone Park
All of the blue whales in the world
