Use the following graph to answer the questions below.

Percent of sea slug respiratory carbon demand provided by indwelling dinoflagellates.
-If the dinoflagellate-containing sea slug P. ianthina otherwise preys on coral animals, then it would be least surprising to find that
A)P. ianthina has no tolerance to the toxin in the nematocysts of its prey.
B)P. ianthina can locate its coral prey by chemicals released into the water by corals.
C)The coral prey harbour dinoflagellates in their tissues.
D)The coral prey transform themselves into medusas to flee from approaching P. ianthina.

Question

Use the following graph to answer the questions below.
  
Percent of sea slug respiratory carbon demand provided by indwelling dinoflagellates.
-If the dinoflagellate-containing sea slug P. ianthina otherwise preys on coral animals, then it would be least surprising to find that
A)P. ianthina has no tolerance to the toxin in the nematocysts of its prey. 
B)P. ianthina can locate its coral prey by chemicals released into the water by corals. 
C)The coral prey harbour dinoflagellates in their tissues. 
D)The coral prey transform themselves into medusas to flee from approaching P. ianthina.

Quizplus · Accepted Answer

Given that the sea slug P. ianthina obtains its respiratory carbon demand from the dinoflagellates residing within its tissues, it is least surprising to find that the coral prey it preys on also harbor dinoflagellates in their tissues (option C). This suggests that the sea slug may have evolved to incorporate these dinoflagellates into its own tissues as a way of obtaining respiratory carbon, and may have also developed a way to locate these dinoflagellate-harboring prey. Options A, B, and D are less likely because they do not directly relate to the fact that P. ianthina relies on dinoflagellates for respiratory carbon.

Use the Following Graph to Answer the Questions Below