| Red muscle fibre | White muscle fibre | 
| These are dark red | These are lighet in colour | 
| Mitochondria is more in number. | Mitochondria is less in number. | 
| A | B | 
| These carry out mainly aerobic oxidation and can contract for a longer period without fatigue. | These carry out mainly anaerobic oxidation and can get fatigued soon. | 
| C | D | 
| Optons | A | B | C | D | 
| 1. | More sarcoplasmic reticulum | Less sarcoplasmic reticulum | Muscle fibres have slow rate of contraction for long periods | Muscle fibres have fast rate of contraction for long periods | 
| 2. | Less sarcoplasmic reticulum | More sarcoplasmic reticulum | Muscle fibres have slow rate of contraction for long periods | Muscle fibres have fast rate of contraction for long periods | 
| 3. | Less sarcoplasmic reticulum | More sarcoplasmic reticulum | Muscle fibres have fast rate of contraction for long periods | Muscle fibres have slow rate of contraction for long periods | 
| 4. | Less sarcoplasmic reticulum | less sarcoplasmic reticulum | Muscle fibres have fast rate of contraction for long periods | Muscle fibres have fast rate of contraction for long periods | 
| Options | I | II | III | IV | 
| 1. | T | T | T | T | 
| 2. | T | F | T | F | 
| 3. | F | T | F | T | 
| 4. | T | T | F | T |