- A Ball and socket
- B Hinge
- C Pivot
- D Gliding
Correct answer: B. Hinge
Explanation: The knee is a hinge joint that allows movement in one plane (flexion and extension). Other hinge joints: elbow, ankle, finger joints. Ball and socket joints (hip, shoulder) allow movement in all planes.
Concept context
Types of movement, muscle contraction, skeletal system, joints, and disorders. Important for Class 11 and NEET.