Based on the following graph, what is the most likely relationship between Paramecium and Didinium?
A. Paramecium prey on Didinium.
B. Paramecium have a commensal relationship with Didinium.
C. Didinium and Paramecium have a mutualistic relationship.
D. Didinium prey on Paramecium.
E. Paramecium is a parasite that feeds on Didinium.
Clarify question:
What is the key concept addressed by the question?
What type of thinking is required?
Gather Content:
What do you already know about relationship between the two species? What other information is related to the question?
Choose Answer:
Given what you now know, what information is most likely to produce the correct answer?
Reflection:
Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?
D. Didinium prey on Paramecium.
Clarify question:
What is the key concept addressed by the question?
The key concept is being able to interpret the interaction of two species.
What type of thinking is required?
This is an analysis question. You will need to extract the information from the graph in order to determine the correct answer.
Gather Content:
What do you already know about relationship between the two species? What other information is related to the question?
In the situation presented in the question, the population of Paramecium initially increases, once the Didinium is introduced the Paramecium population begins to decline as the Didinium population grows. Once the Paramecium disappears that Didinium disappears shortly afterwards.
Choose Answer:
Given what you now know, what information is most likely to produce the correct answer?
Once the Didinium is introduced the Paramecium population begins to decline. This could suggest competition between the two protists for some resource. Once the paramecia are gone the population of Didinium starts to decline. The Didinium were eating the paramecia. Once the paramecia were gone the Didinium starved.
Reflection:
Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?
You need to extract information from the graph in order to select the correct answer. Were you able to select the correct answer?
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