Question
Give five main differences between mitosis and meiosis.
| Mitosis | Meiosis |
| 1. It takes place in somatic cells . | 1. It takes place in germ or reproductive cells. |
| 2. Chromosome number of parent cell is maintained. | 2. Chromosome number of parent cell is reduced to half. |
| 3. No crossing over and no chiasmata formation. | 3. Crossing over and chiasmata formation occur. |
| 4. Cytokinesis is necessary after telophase I. | 4. Cytokinesis is not necessary after telophase I. |
| 5. Two daughter cells are formed at the end. | 5. Four daughter cells are formed at the and. |
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| Column I | Column II |
| (i) Stomata closed | (a) decomposers |
| (ii) Autotrophs | (b) light reaction |
| (iii) By-products of photosynthesis | (c) animals |
| (iv) Photolysis | (d) during night |
| (v) Bacteria and fungi | (e) green plants |
| (f) oxygen |

| Column I | Column II | ||
| (i) | Auditory canal | (a) | Channels pressure waves of air into the middle ear. |
| (ii) | Auditory (Eustachian tube) | (b) | Collects pressure waves of air. |
| (iii) | Auditory nerve | (c) | Converts pressure waves of air into vibrations of bone. |
| (iv) | Incus | (d) | Dissipates sound waves. |
| (v) | Malleus | (e) | Equalizes pressure between the middle ear and the atmosphere. |
| (vi) | Oval window | (f) | Provide information about the spatial orientation of the head. |
| (vii) | Pinna | (g) | Transfers vibrations from a bone to a fluid. |
| (viii) | Round window | (h) | Transfers vibrations from a bone to a membrane. |
| (ix) | Semi-circular canal | (i) | Transfers vibrations from a bone to a bone. |
| (x) | Stapes | (j) | Transfers vibrations from a membrane to a bone. |
| (xi) | Tympanic membrane | (k) | Transmits action potential to the auditory cortex. |