Download Predation Quiz

Predation Quiz
1) Which of the following is an example of predation:
a. Two male lions fighting for dominance of a pride.
b. The goby fish warning a shrimp about danger so that they both retreat to the
burrow the shrimp maintains.
c. A roundworm living inside a dog and producing eggs which then get distributed
to the environment through the dog’s feces.
d. A fox hunting and eating a rabbit for food.
2) What is a predator?
3) What is prey?
Use the following graph to answer questions 4-6.
4) Which point on the graph above represents a time when the prey population is at a
high?
5) Which point on the graph above represents a time when the predator population is at a
high?
1
6) Which of the following best describes what is happening at time 1 on the graph above?
a. The decreasing predator population is allowing for an increase in the prey
population.
b. The increasing prey population is causing a decrease in the predator population.
c. The decreasing prey population is allowing for an increasing predator population.
d. The increasing predator population is causing a decrease in the prey population.
7) Which of the following best describes what is happening at time 2 on the graph above?
a. The decreasing predator population is allowing for an increase in the prey
population.
b. The increasing prey population is causing a decrease in the predator population.
c. The decreasing prey population is allowing for an increasing predator population.
d. The increasing predator population is causing a decrease in the prey population.
8) If sea stars were removed from a coral reef community, mussel and sea urchin
populations would have explosive growth and drive out most other species. This means
that sea stars are a ______________ species for this community.
9) In general terms, how do predators benefit their ecosystems?
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Predation Quiz - KEY
1) Which of the following is an example of predation:
a. Two male lions fighting for dominance of a pride.
b. The goby fish warning a shrimp about danger so that they both retreat to the
burrow the shrimp maintains.
c. A roundworm living inside a dog and producing eggs which then get distributed
to the environment through the dog’s feces.
d. A fox hunting and eating a rabbit for food.
2) What is a predator?
An organism higher on the food chain that obtains its energy by consuming other organism
lower on the food chain.
3) What is prey?
An organism lower on the food chain that gets eaten by another organism that is higher on the
food chain.
Use the following graph to answer questions 4-6.
4) Which point on the graph above represents a time when the prey population is at a
high?
B
3
5) Which point on the graph above represents a time when the predator population is at a
high?
C
6) Which of the following best describes what is happening at time 1 on the graph above?
a. The decreasing predator population is allowing for an increase in the prey
population.
b. The increasing prey population is causing a decrease in the predator population.
c. The decreasing prey population is allowing for an increasing predator population.
d. The increasing predator population is causing a decrease in the prey population.
7) Which of the following best describes what is happening at time 2 on the graph above?
a. The decreasing predator population is allowing for an increase in the prey
population.
b. The increasing prey population is causing a decrease in the predator population.
c. The decreasing prey population is allowing for an increasing predator population.
d. The increasing predator population is causing a decrease in the prey population.
8) If sea stars were removed from a coral reef community, mussel and sea urchin
populations would have explosive growth and drive out most other species. This means
that sea stars are a ___keystone___________ species for this community.
9) In general terms, how do predators benefit their ecosystems?
Predators help to keep their prey populations in check therefore making sure the prey
populations do not over exceed the carrying capacity of the ecosystem. Keeping prey
populations in check also influences the rest of the food chain helping other populations and
thus the whole community within an ecosystem to stay within a healthy limit too.
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