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Ecosystem Relationships And Food Chains 8.11A
Test Description: A
Instructions: Answer all questions to get your test result.
1) Leopards eat baboon and impalas in a terrestrial ecosystem. What prediction can be made if the baboon population begins to decrease because of disease?
A
The impala population will decrease.
B
The leopard population will increase.
2) What relationship exists between seed-eating birds and grass?
A
predator/host
B
parasite/host
C
consumer/consumer
D
consumer/producer
3) What organism represents a parasite in a terrestrial ecosystem food web?
A
snake
B
tick
C
baboon
D
locust
4) The Center for Disease Control publishes articles explaining the causes of seasonal West Nile virus. Research proves mosquitoes in freshwater ecosystems spread the disease to other organisms. How do they transmit the virus to other organisms?
A
Mosquitoes transmit the virus when they land on the skin of an organism.
B
Mosquitoes transmit the virus as hosts who feed on the blood of organisms and inject the virus during feeding.
C
Mosquitoes transmit the virus as parasites which feed on the blood of host organisms and inject the virus during feeding
D
Mosquitoes transmit the virus by preying on organisms and spreading the virus on contact.
5) Predators and parasites both cause harm to other organisms. What is a difference between predators and parasites?
A
Predators only harm producers, while parasites only harm consumers.
B
Predators eat organisms, while parasites live off of organisms.
C
Predators only kill at night, while parasites only kill during the day.
D
Predators harm their young, while parasites do not.
6) A parasite enters the food web and causes disease in the toad population. The skunk's sole source of energy is the toad. What impact could this have on the skunk population over time?
A
Some skunks move.
B
Some skunks adapt.
C
All of the above.
D
Some skunks die.
7) Where does the mouse population get its energy?
A
Wolf
B
Nuts
C
Deer
D
Nectar
8) A science student observes the interaction of crickets and ants outside the school. Ants surround, cover, and eat crickets. What relationship exists between ants and crickets?
A
Crickets-predator, ants-prey
B
Crickets-producer, ants-consumer
C
Crickets-prey, ants-predator
D
Crickets-parasite, ants-host
9) Rabbits eat lettuce and carrots. What type of relationship do carrots and rabbits have?
A
predator/prey
B
predator/host
C
parasite/host
D
producer/consumer
10) Which relationship best describes the interaction between a tapeworm and a human intestine?
A
parasite and host
B
biotic and abiotic
C
producer and consumer
D
predator and prey
11) Which statement best describes relationships that exist in a food web?
A
Producers can live independently of consumers, but predators must have prey to survive.
B
There is always a larger population of predators that prey on animals in a food web.
C
Consumers can live independently of producers, but prey animals must have predators to survive
D
Parasites can live independently of hosts, but consumers must have producers to survive.
12) A group of students designs predator/prey models. Which model accurately represents this relationship?
A
Shoebox ecosystem with deer and rabbits
B
Drawing of a mouse hiding in the grass
C
Paper mache replica of grasshoppers living in grass
D
Diorama of a cougar chasing a deer
13) Hawks are predator to small organisms such as snakes, rabbits, and mice. What is a possible result of adding a hawk to an ecosystem?
A
The rabbit population will increase.
B
The cougar population will increase.
C
All of the above.
D
The grass population will increase.
14) A student wants to list the producer/consumer and predator/prey relationships in an ecosystem. What would be the best way to organize these interactions?
A
Food web
B
Outline
C
Food chain
D
None of the above
15) Students are given cards containing information about several predator/prey and parasite/host relationships. Which question could be the focus of a comparative investigation?
A
How does natural selection influence predator/prey relationships?
B
In what ways is the parasite/host relationship similar to the predator/prey relationship
C
How do predators and hosts interact with abiotic factors?
D
What effect do parasite/host relationships have on populations of producers?
16) In groups, students create dioramas to depict freshwater ecosystems. What is an advantage of using dioramas to study ecosystems?
A
Dioramas are accurate tools that measure environmental changes.
B
Dioramas provide information about environmental changes.
C
Dioramas provide information about organism interactions within an ecosystem.
D
Dioramas are accurate tools for collecting data about organism interactions.
*select an answer for all questions
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