Muscles, Joints & Artificial Cells — task. Biology CBSE Live product, Class 9 (2026-27).

Identify and select the correct option in each question:

1. Muscle fatigue during sports is mainly caused due to:

Excess oxygen
Lack of water only
High sugar levels
Lack of oxygen

2. What is the function of ligaments in joints?

Produce energy
Connect bones to bones
Connect muscles to bones
Protect nerves

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