| 1. | Made up of histone proteins wrapped around by DNA. |
| 2. | A small disc shaped structure at the surface of centromere. |
| 3. | Terminal end of chromosome. |
| 4. | Present between two sister chromatids in centromere. |
| (i) | (ii) | |
| (1) | Prophase | Metaphase |
| (2) | Anaphase | Telophase |
| (3) | Metaphase | Anaphase |
| (4) | Prophase | Anaphase |
| (a) | Mitosis |
| (b) | Meiosis I |
| (c) | Meiosis II |
| 1. | Most of the cell organelles duplicate here |
| 2. | Involves protein synthesis |
| 3. | Centriole duplicates in cytoplasm |
| 4. | RNA formation occurs |
| 1. | Only in some lower plants |
| 2. | Both in plants and animals |
| 3. | in most of the animals |
| 4. | Only in some higher plants |