Vocabulary
Occurs when organisms try to use the same limited resource.
Competition
A small fish called a cleaner wrasse darts in and out of a larger fish’s mouth, removing and eating parasites and dead tissue. Which term best describes the relationship between the cleaner wrasse and the large fish?
A. Mutualism
because the wrasse benefits by getting food, and the larger fish benefits by getting its mouth cleaned.
Which of the following is the most likely reason that a population might crash?
D. the carrying capacity of the environment suddenly drops
because a sudden drop in what the environment can sustain will cause a population crash.
the feeding relationships among all of the organisms in an ecosystem.
Food Chain
Bees have a society in which different members have different responsibilities. The interaction among bees is an example of what type of behavior?
A. Cooperation
because individual bees work together in their defined roles to benefit the entire population.
Grizzly bears are classified in the order Carnivora. Their diet consists of roots, tubers, berries, nuts, fungi, insects, rodents, and fish. What ecological role best describes grizzly bears?
B. Omnivores
because grizzly bears eat both plants and animals.
characterized by temperature, precipitation, and the plant and animal communities that live there.
Biomes
After a mild winter with plenty of food, a deer population grew rapidly. What most likely happened to the wolf population in that same ecosystem?
B. It grew
because when prey are abundant, the predator population is more likely to grow because of the plentiful food source.
Squirrel population has grown for 180 squirrels in 1980 to 320 squirrels by year 2000. What factor is the most likely result of this.
B. Immigration
because immigration is when individuals move into a population.
the role of a population in its community, including its environment and its relationship with other species.
habitat
Which example is an abiotic factor?
B. Water
because the water is a nonliving part of the environment.
an environmental factor that increases the growth of a population?
limiting factor
Which of the following is an example of a biotic limiting factor for a population?
C. Disease
because the disease-causing agent could be living, and disease affects living organisms.