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Q.
The slow twitch muscle fibres which are rich in myoglobin and have abundant mitochondria are
Locomotion and Movement
Solution:
Muscles contain a red coloured pigment called myoglobin that stores oxygen. Some muscles have high content of myoglobin which gives them reddish appearance. Such muscles are called red muscles. Such muscles have abundant mitochondria and show slow rate of contraction for long periods that's why they are called slow twitch muscles.