Assertion :Fibrous Joints play a significant role in locomotion. Reason: Fibrous joints have fluid-filled cavity between the articulating surfaces of the two bones.

If both assertion and reason are true and reason is the correct explanation of assertion.

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If both assertion and reason are true but reason is not the correct explanation of assertion.

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If assertion Is true but reason is false.

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If both assertion and reason are false.

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Solution

The correct option is D If both assertion and reason are false.
Synovial cavity and ligament are present in fibrous joints.
These are typical joints having articulate surface and synovial capsules.
Synovial fluid acts as a grease in the joints. For example joints of the elbow and the hips. Articular cartilage cover the surface of article of bones. The articles consist of two layers of the fibrous capsule and inner synovial membrane. The synovial membrane thickness for normal fluid is lubrication provides nourishment to articular cartilage.
So, the correct option is 'If both assertion and reason are true and the reason is the correct explanation of assertion.'

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Read the assertion and reason carefully to mark the correct option out of the options given below :

(a) If both assertion and reason are true and the reason is the correct explanation of the assertion.

(b) If both assertion and reason are true but reason is not the correct explanation of the assertion.

(d) If the assertion and reason both are false.

(e) If assertion is false but reason is true.

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