Match List I with List II :

List-I (Phase of cell cycle)	List-II (Activity)
A. G₁$G_{1}$ phase	I. Actual cell division occurs
B. S phase	II. Cell is metabolically active and continuously grows but does not replicate its DNA
C. G₂$G_{2}$ Phase	III. Synthesis of DNA occurs and the amount of DNA per cell doubles
D. M phase	IV. Proteins are synthesized while cell growth continues

Choose the correct answer from the options given below :

Core Logic

• G₁$G_{1}$ phase (Gap 1): The cell is metabolically active and continuously grows but does not replicate its DNA. Hence, A matches with II.
• S phase (Synthesis): Marks the phase during which DNA synthesis or replication takes place, doubling the amount of DNA per cell. Hence, B matches with III.
• G₂$G_{2}$ phase (Gap 2): Proteins are synthesised in preparation for mitosis while cell growth continues. Hence, C matches with IV.
• M phase (Mitosis): The phase where actual cell division takes place. Hence, D matches with I.

Step 1: Final Conclusion

The correct sequence is A-II, B-III, C-IV, D-I.

Pattern Recognition

S-phase is universally known for DNA 'Synthesis' (B-III). Only one option might start with A-II or B-III, making elimination fast.

Chapter Mix

Class 11 Biology: Cell Cycle and Cell Division