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Which one of the following pairs of structures is correctly matched with their correct description? Structures Description (1) Tibia and fibula ---- Both form parts of knee joint (2) Cartilage and cornea ---- No blood supply but do require oxygen for respiratory need (3)Shoulder joint and elbow joint ---- Ball and socket type of joint (4) Premolars and molars ----- 20 in all and 3– rooted

Which one of the following pairs of structures is correctly matched with their correct description?  
Structures                       Description
(1) Tibia and fibula  ----   Both form parts of knee joint
(2) Cartilage and cornea   ----  No blood supply but do require oxygen for respiratory need
(3)Shoulder joint and elbow joint     ----   Ball and socket type of joint
(4) Premolars and molars     -----      20 in all and 3– rooted 

Grade:11

2 Answers

Aalmeen Fatima
15 Points
3 years ago
Ans:(1) Tibia and fibula both are the pair of jointed bones which forms the parts of knee joint.These are found in the lower side of the knee and upper to the foot
Simran Vinaik
askIITians Faculty 1231 Points
3 years ago
Correct Answer is (2).
Cartilage and cornea are devoid blood supply yest they require oxygen for respiratory need.
First option is incorerct because the knee joint is between three bones: the femur, tibia, and patella.
Third is incorrect as shoulder is ball and socket joint but elbow joints is hinge joint.
Fourth is incorrect as all premolars and molars do not have 3 roots.

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