Perforation Plates Are Characteristic of the ______ of ______

question 59

Multiple Choice

Perforation plates are characteristic of the ______ of ______.

• A)tracheids; angiosperms
• B)vessel elements; angiosperms
• C)tracheids; gymnosperms
• D)vessel elements; gymnosperms
• E)tracheids; seedless vascular plants

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Definitions:

GABA

Gamma-Aminobutyric Acid, a neurotransmitter in the brain that inhibits or reduces activity of neurons.

Serotonin

A neurotransmitter involved in the regulation of mood, appetite, and sleep, and has some cognitive functions, including memory and learning.

Sleep Needs

The amount of sleep required by an individual to function optimally, which varies by age and individual differences.

Person to Person

Refers to direct interaction or communication between individuals without the intervention of others.