Which of the following statements wrongly represents the nature of smooth muscle? (a) Communication among the cells is performed by intercalated discs (b) These muscles are present in the wall of blood vessels (c) These muscle have no striations (d) They are involuntary muscles Choose the correct answer:
Answer: (A) Communication among the cells is performed by intercalated discs. Answer: (a) Communication among the cells is performed by intercalated discs.
- A.Communication among the cells is performed by intercalated discs✓
- B.These muscles are present in the wall of blood vessels
- C.These muscle have no striations
- D.They are involuntary muscles
Correct Answer
(A) Communication among the cells is performed by intercalated discs
Solution & Explanation
Answer: (a) Communication among the cells is performed by intercalated discs. Solution: Statement (a) is the one that WRONGLY represents smooth muscle, so it is the required answer. Intercalated discs are junctions found in CARDIAC muscle, not smooth muscle. The remaining statements are true of smooth (visceral) muscle: it occurs in the walls of blood vessels and other hollow visceral organs (b), it has no striations (c), and it is involuntary (d). NCERT (Class XI, Structural Organisation in Animals — Animal Tissues, pre-2023 rationalisation text): muscular tissue — smooth (visceral) vs cardiac muscle (intercalated discs).