Use the Following Information and Figure to Answer the Question

question 45

Multiple Choice

Use the following information and figure to answer the question.
The sea slug Pteraeolidia ianthina (P. ianthina) can harbor living dinoflagellates (photosynthetic protists) in its skin. These endosymbiotic dinoflagellates reproduce quickly enough to maintain their populations. Low populations of the dinoflagellates do not affect the sea slugs very much, but high populations (> 5 x 10⁵ cells/mg of sea slug protein) can promote sea slug survival.

Percent of sea slug respiratory carbon demand provided by indwelling dinoflagellates.
If we assume that carbon is the sole nutrient needed by sea slugs to drive their cellular respiration, then based on the graph, during which season(s) is it least necessary for P. ianthina to act as a chemoheterotroph?

• A) winter
• B) spring
• C) summer
• D) fall

---

Definitions:

Functions

In the context of business and technology, functions refer to distinct tasks or operations that a system, department, or software is designed to perform.

Customer Relationship Management (CRM)

The process by which companies get new customers, keep the customers they already have, and grow the business by increasing their share of customers’ purchases.

Specialty Leather Goods

High-quality, often handcrafted leather products that are distinguished by their unique design, materials, and purpose, catering to specific market niches.

Customer Loyalty Program

Marketing strategies designed to encourage customers to continue to shop at or use the services of a business through rewards and incentives.