Which Characteristic Is Common to All Chordates

question 57

Multiple Choice

Which characteristic is common to all chordates?

• A)They all have vertebral columns.
• B)They all exhibit radial symmetry.
• C)They all have a notochord sometime during their life cycle.
• D)They all have an exoskeleton sometime during their life cycle.

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Definitions:

D'Arsonval

Refers to a type of galvanometer used for detecting and measuring small electric currents by the mechanical movement it produces through a magnetic field.

D'Arsonval Meter

A type of ammeter, based on the D'Arsonval galvanometer, used to measure electric current with a moving coil in a magnetic field.

Moving Coil

A type of electromagnetic actuator where a coil within a magnetic field moves when current flows through it, commonly found in loudspeakers and galvanometers.

Ammeter Shunt

A device used to change the full scale value of an ammeter by providing another path for current flow. Most ammeter shunts produce a voltage drop of 50 millivolts when rated current flows through them.