Biology
Assertion (A): Sympathetic and parasympathetic systems are the two parts of autonomic nervous system which are independent in their functioning and are not related to each other at all.
Reason (R): Both of these nervous systems are opposite in their actions. Sympathetic nervous system accelerates the actions while parsympathetic system relaxes them.
- Both A and R are true and R is the correct explanation of A.
- Both A and R are true but R is not the correct explanation of A.
- A is true but R is false.
- A is false but R is true.
Nervous System
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Answer
A is false but R is true.
Reason — A is false as the sympathetic and parasympathetic systems are not independent and unrelated. They are closely connected parts of the autonomic nervous system and work in coordination to maintain balance (homeostasis) in the body.
R is true as the sympathetic nervous system generally accelerates body activities (e.g., increases heart rate, breathing), while the parasympathetic nervous system slows down or relaxes these activities. Their actions are opposite.
Therefore, A is false but R is true is the correct option.
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