Which of the Following Types of Animals Lacks a Nervous

question 108

Multiple Choice

Which of the following types of animals lacks a nervous system?

• A)spiders
• B)sponges
• C)squid
• D)sea anemones

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Definitions:

Anxiety Disorder

A mental health disorder characterized by feelings of worry, anxiety, or fear that are strong enough to interfere with one’s daily activities.

Manic-depressive

Manic-depressive is an older term for bipolar disorder, a mental health condition characterized by extreme mood swings including emotional highs (mania or hypomania) and lows (depression).

Affective Disorder

A group of mood disorders in which a person's emotional state or mood is inconsistent with their circumstances and interferes with their ability to function.

Anxiety Disorder

A mental health disorder characterized by feelings of worry, anxiety, or fear that are strong enough to interfere with one's daily activities.