Solution

Red muscle fibre White muscle fibre
1. Red muscle fibres are thin and smaller in size. 1. White muscle fibres are thick and larger in size.
2. They are red in colour as they contain large amounts of myoglobin. 2. They are white in colour as they contain small amounts of myoglobin.
3. They contain numerous mitochondria. 3. They contain less number of mitochondria.
4. They carry out slow and sustained contractions for a long period. 4. They carry out fast work for duration.short
5. They provide energy by aerobic respiration. 5. They provide energy by anaerobic respiration.