5. Write the difference between :
(b) Red and White muscles
| Red muscle fibre | White muscle fibre |
| These are thin and smaller in size | These are thick and larger |
| Due to the presence of myoglobin, they are red. | Due to the presence of only a small amount of myoglobin, they are white. |
| These carry out slow and sustained contractions | These carry out fast contractions for shorter durations. |
| They contain numerous mitochondria and release energy by aerobic respiration. | They have less number of mitochondria and release energy by anaerobic respiration. |