| 1. | To repair damaged DNA |
| 2. | To regulate cell growth |
| 3. | To separate the chromosomes |
| 4. | To synthesize new DNA |
| 1. | Metaphase | 2. | Anaphase |
| 3. | Telophase | 4. | Prophase |
| 1. | Anaphase | 2. | Telophase |
| 3. | Prophase | 4. | Metaphase |
| 1. | Metaphase, Metaphase II | 2. | Prophase, Telophase I |
| 3. | Telophase, Anaphase I | 4. | Anaphase, Anaphase II |
| 1. | Coiling and condensation of chromatids |
| 2. | Spindle fibres attach to Kinetochores of chromosomes |
| 3. | Movement of centrioles towards opposite poles |
| 4. | Pairing of homologous chromosomes |
| 1. | Splitting of centromere occurs at anaphase. |
| 2. | All the chromosomes lie at the equator at metaphase. |
| 3. | Spindle fibres attach to centromere of chromosomes. |
| 4. | Chromosomes decondense at telophase |
Given below are two statements : One is labelled as Assertion (A) and the other is labelled as Reason (R)
| Assertion (A): | The growth of the multicellular organism is due to mitosis |
| Reason (R): | Mitosis is also called as equational division and it offers genetic stability |
In light of the above statements choose the correct answer from the options given below:
| 1. | (A) is True but (R) is False. |
| 2. | (A) is False but (R) is True. |
| 3. | Both (A) and (R) are True and (R) is the correct explanation of (A). |
| 4. | Both (A) and (R) are True but (R) is not the correct explanation of (A). |
| 1. | Complete disintegration of nuclear envelope takes place. |
| 2. | Chromosomes are highly condensed. |
| 3. | Metaphase chromosomes are made up of four sister chromatids held together by centromere. |
| 4. | Chromosomes lie at the equator of the cell. |
| 1. | 4 | 2. | 32 |
| 3. | 8 | 4. | 16 |
Attachment of spindle fibers to kinetochores of chromosomes becomes evident in:
| 1. | Anaphase | 2. | Telophase |
| 3. | Prophase | 4. | Metaphase |