Nudibranchs, a Type of Predatory Sea Slug, Can Have Various

question 43

Multiple Choice

Nudibranchs, a type of predatory sea slug, can have various protuberances (i.e., extensions) on their dorsal surfaces. Rhinophores are paired structures, located close to the head, which bear many chemoreceptors. Dorsal plummules, usually located posteriorly, perform respiratory gas exchange. Cerata usually cover much of the dorsal surface and contain nematocysts at their tips.
-The parapodia of polychaetes have a function most similar to that of

• A) rhinophores.
• B) dorsal plummules.
• C) cerata.
• D) more than one of these.

---

Definitions:

Mean

The average of a set of numbers, calculated by dividing the sum of these numbers by the count of the numbers.

Variance

A measure of the dispersion of a set of data points around their mean; it is calculated as the average of the squared differences from the Mean.

Chi-squared Distribution

The Chi-squared distribution is a statistical distribution widely used in inferential statistics, especially in chi-squared tests, described by degrees of freedom.

Degrees of Freedom

The number of independent pieces of information available to estimate another piece of information or parameter.