Match List-I with List-II: List-I (a) S phase (b) G2 phase (c) Quiescent stage (d) G1 phase List-II (i) Proteins are synthesized (ii) Inactive phase (iii) Interval between mitosis and initiation of DNA replication (iv) DNA replication Choose the correct answer from the options given below:
Answer: (A) (a)-(iv), (b)-(i), (c)-(ii), (d)-(iii). Answer: (a)-(iv), (b)-(i), (c)-(ii), (d)-(iii) Solution: S phase = DNA replication (iv); G2 phase = proteins are synthesised in preparation for mitosis (i); Quiescent stage (G0) = inactive phase (ii); G1 phase = interval between mitosis and initiation of DNA replication (iii).
- A.(a)-(iv), (b)-(i), (c)-(ii), (d)-(iii)✓
- B.(a)-(ii), (b)-(iv), (c)-(iii), (d)-(i)
- C.(a)-(iii), (b)-(ii), (c)-(i), (d)-(iv)
- D.(a)-(iv), (b)-(ii), (c)-(iii), (d)-(i)
Correct Answer
(A) (a)-(iv), (b)-(i), (c)-(ii), (d)-(iii)
Solution & Explanation
Answer: (a)-(iv), (b)-(i), (c)-(ii), (d)-(iii) Solution: S phase = DNA replication (iv); G2 phase = proteins are synthesised in preparation for mitosis (i); Quiescent stage (G0) = inactive phase (ii); G1 phase = interval between mitosis and initiation of DNA replication (iii). This matches option (a)-(iv), (b)-(i), (c)-(ii), (d)-(iii). Other options wrongly assign DNA replication or the post-mitotic interval to the wrong phase. NCERT Reference: Ch 10, p.121, lines 37-40 — "G1 phase corresponds to the interval between mitosis and initiation\nof DNA replication"