Which statements are correct regarding centriole?
I: | Centrioles are typically made up of nine sets of short microtubule triplets, arranged in a cylinder. |
II: | The main function of centrioles is to produce cilia during interphase and the aster and the spindle during cell division. |
III: | Centrioles start duplicating when DNA replicates. |
1. | Only I and II | 2. | Only I and III |
3. | Only II and III | 4. | I, II and III |
Assertion (A): | Plant cells are capable of forming a spindle apparatus during cell division. |
Reason (R): | All plant cells have centrioles. |
1. | Both (A) and (R) are True and (R) correctly explains (A). |
2. | Both (A) and (R) are True and (R) does not correctly explain (A). |
3. | (A) is True; (R) is False |
4. | Both (A) and (R) are False |