What Do All Craniates Have That Earlier Chordates Did Not

question 62

Multiple Choice

What do all craniates have that earlier chordates did not have?

• A) brain
• B) vertebrae
• C) cartilaginous pipe surrounding notochord
• D) partial or complete skull
• E) bone

---

Definitions:

Industry Standard

A set of criteria within an industry relating to the quality, safety, and performance of products and services accepted as the norm.

P-Value

The probability measure indicating the likelihood of obtaining a test statistic at least as extreme as the one that was actually observed, assuming that the null hypothesis is true.

Standard Deviation

A measure of the dispersion or variability within a set of data points, indicating how spread out the data points are from the mean.

Null Hypothesis

A hypothesis used in statistics that proposes no significant difference or effect between specified populations, conditions, or variables.