Evaluate
- $4 \left( \frac { 4 } { 3 } \right)$

question 60

Multiple Choice

Evaluate.
- $4 \left( \frac { 4 } { 3 } \right)$

• A) \(- \frac { 16 } { 3 }\)
• B) \(\frac { 16 } { 3 }\)
• C)3
• D)- 2

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Definitions:

Echinoderms

Echinoderms are a group of marine invertebrates that include sea stars, sea urchins, and sand dollars, characterized by radial symmetry and a unique water vascular system.

Pseudocoelom

A fluid-filled body cavity lying between the intestines and outer body wall that is only partially lined with mesoderm in some invertebrates.

Mesoderm

The middle germ layer of the early embryo; gives rise to connective tissue, muscle, bone, blood vessels, kidneys, and many other structures. Compare with ectoderm and endoderm.

Coelom

refers to the body cavity in animals that is lined by mesoderm tissue, separating the digestive tract from the outer body wall.