NEETBotanyCell Cycle and Cell Division
Match List-I with List-II. List-I List-II (A) Failure of cytokinesis after telophase (I) Polyploidy in a single nucleus (B) Disruption of spindle fibers at metaphase (II) Multinucleate condition (syncytium) (C) Failure of DNA replication (III) Beginning of anaphase (D) Splitting of centromere (IV) Cell cycle arrest Choose the correct answer from the options given below:
Options
- A(A)-(II), (B)-(I), (C)-(IV), (D)-(III)
- B(A)-(I), (B)-(II), (C)-(IV), (D)-(III)
- C(A)-(II), (B)-(I), (C)-(III), (D)-(IV)
- D(A)-(I), (B)-(II), (C)-(III), (D)-(IV)
Correct answer
A. (A)-(II), (B)-(I), (C)-(IV), (D)-(III)
Step-by-step solution
Failure of cytokinesis after telophase results in a multinucleate condition known as a syncytium (e.g., liquid endosperm in coconut). Disruption of spindle fibers at metaphase prevents the movement of separated sister chromatids to opposite poles, resulting in polyploidy within a single cell. Failure of DNA replication triggers cell cycle checkpoints, leading to cell cycle arrest to prevent the division of incomplete genetic material. Splitting of the centromere marks the beginning of anaphase during karyokinesis.