Sponges and Ctenophores Have Both Been Proposed as Basal Metazoans

question 3

Multiple Choice

Sponges and ctenophores have both been proposed as basal metazoans. Imagine that you wanted to provide additional evidence to help resolve this question. Which of the following projects would be the best next step?

• A) more extensive study of DNA sequences in the bilateria
• B) ultrastructural (that is, electron microscope) comparisons of choanoflagellates and sperm cells from arthropods
• C) measurements of molecular clocks from the Lophotrochozoa
• D) more extensive studies of DNA sequences in both groups

---

Definitions:

Acclimate

The process of becoming accustomed to a new climate or environment, or adjusting to new conditions or situations.

New Employees

Individuals who have recently been hired to fill positions within an organization, typically undergoing orientation and training processes.

Communicating Diplomatically

The skill of conveying messages or negotiating in a sensitive, tactful, and effective manner, especially in complex or delicate situations.

Critical Tone

A manner of writing that expresses a judgmental or analytical approach, often evaluating or critiquing the subject matter.