"Bipinnaria" Describes the

question 61

Multiple Choice

"Bipinnaria" describes the

• A)larval form of many echinoderms.
• B)central two-branched reproductive structures of sea stars.
• C)hydraulic system that controls the tube feet of sea urchins and sea stars.
• D)ability of these animals to grow into either males or females.
• E)underlying bilateral symmetry of an adult although it appears to be pentaradial.

---

Definitions:

Scientific Notation

A way of expressing numbers that are too big or too small to be conveniently written in decimal form, using powers of ten.

Textbook

A book containing comprehensive coverage of a particular topic or subject, used primarily for academic study.

Physics Instructor

An educator who specializes in teaching the principles and laws of physics.

Supplemental Resources

Additional materials or tools provided to support or enhance learning, understanding, or research beyond primary sources.