CBSE 2025 · Region 2 · Set 2 · Q29 · 3 marks
(a)What is meant by reflex arc ? Where are they formed in the human body ?(b)Why have reflex arcs evolved in animals?
(a)
What is meant by reflex arc ? Where are they formed in the human body ?
(b)
Why have reflex arcs evolved in animals?
Marking-scheme solution
(a)
The process of detecting the signal or the input and responding to it by an output action, completed quickly. Such a connection is called as reflex arc /A pathway followed during reflex action is called reflex arc./
Reflex arc is formed in the spinal cord.
(b)
Reflex arcs have evolved in animals because the thinking process of the brain is not fast enough. /Brain may take longer time to respond.
Control and CoordinationNervous System and Reflex ActionUnderstandshort_answereasy
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CBSE Class 10 Science past-paper question from the 2025board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.