The correct option is (ii) hinge joint. Hinge joints allow movement mainly in one direction, like bending and straightening. Knees and ankles function similarly to door hinges, providing controlled movement and stability during walking, running and jumping.
Which type of joint is involved when you bend your knees and ankles? (i) Ball and socket (ii) Hinge (iii) Pivot
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The correct answer is (ii) hinge joint. Hinge joints permit movement mainly in one plane, allowing bending and straightening actions. The knee and ankle joints work like door hinges, providing controlled movement and stability. These joints help in activities such as walking, running, jumping and maintaining posture while limiting unnecessary sideways movements that could cause injury.
For more NCERT Solutions of Class 9 Science Exploration Chapter 3 Tissues in Action Question Answer (2026-27)
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