Echinoderms Have an Exoskeleton

question 50

True/False

Echinoderms have an exoskeleton.

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Definitions:

Fine Motor Skills

The coordination of small muscle movements usually involving the synchronization of hands and fingers with the eyes.

Voluntarily Grasp

The intentional action of closing the hand and holding onto something, seen as an important motor skill development in infants.

Developmental Lag

A delay in reaching specific developmental milestones compared to the average timeline for those milestones.

Neurologic Disorder

A disorder affecting the nervous system, including the brain, spinal cord, and nerves, leading to a range of symptoms.