A Brachiopod Can Be Distinguished from a Bivalve by the Presence

question 33

Multiple Choice

A brachiopod can be distinguished from a bivalve by the presence of

• A) two hinged shells.
• B) a digestive system with separate mouth and anus.
• C) a lophophore.
• D) suspension feeding.
• E) a distinct head.

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Definitions:

Deepest Stage

Refers to the phase of sleep (specifically, stage 3 or 4 of non-REM sleep) characterized by the deepest level of unconsciousness and the hardest state from which to be awakened.

REM Rebound

The phenomenon of increased REM sleep after a period of REM sleep deprivation.

NREM Rebound

The increase in the amount of non-rapid eye movement (NREM) sleep after being deprived of sleep, as a compensatory response.

Sleep Apnea

A sleep disorder characterized by pauses in breathing or shallow breaths during sleep, leading to poor sleep quality and other health issues.