Which Group Is Most Closely Related to the Echinoderms

question 43

Multiple Choice

Which group is most closely related to the echinoderms?

• A)Arthropods
• B)Molluscs
• C)Chordates
• D)Nematodes
• E)Annelids

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Definitions:

Serotonin

A neurotransmitter influential in regulating mood, sleep, appetite, and pain, with imbalances often associated with depression and other mood disorders.

Norepinephrine

A neurotransmitter and hormone involved in the body's fight or flight response, affecting heart rate, blood pressure, and sugar metabolism.

Norepinephrine

A neurotransmitter and hormone involved in regulating stress responses, attention, and arousal states within the body.

Serotonin

A neurotransmitter involved in many functions, including mood regulation, appetite, and sleep, with imbalances associated with several mental health disorders.