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NEET UG BIOLOGY MCQ: NEURAL CONTROL AND COORDINATION
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Assertion: Reflex arc comprises of at least one
afferent neuron, one efferent neuron and a part
of PNS.
Reason: The efferent neuron receives signal
from a sensory organ and transmits the impulse
via a ventral nerve root into the PNS.
afferent neuron, one efferent neuron and a part
of PNS.
Reason: The efferent neuron receives signal
from a sensory organ and transmits the impulse
via a ventral nerve root into the PNS.
View answer and explanation
Correct option: D
If both Assertion and Reason are false
Option D (If both Assertion and Reason are false) is correct because the reflex arc involves the CNS, not just the PNS, and the efferent neuron transmits impulses via a ventral nerve root, not into the PNS.
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II. It is important in overall activation and arousal
III. It is concerned with involuntary movements
IV. It is the seat of learning, memory, reasoning and creative ability Which of the following neuron is also called excitor neuron?