NEETZoologyLocomotion and Movement
Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A): The joint between adjacent vertebrae in the vertebral column allows limited movement. Reason (R): Synovial joints are characterised by the presence of a fluid-filled synovial cavity between the articulating surfaces of the two bones. In the light of the above statements, choose the most appropriate
Options
- ABoth (A) and (R) are true and (R) is the correct explanation of (A)
- BBoth (A) and (R) are true but (R) is not the correct explanation of (A)
- C(A) is true but (R) is false
- D(A) is false but (R) is true
Correct answer
B. Both (A) and (R) are true but (R) is not the correct explanation of (A)
Step-by-step solution
The Assertion (A) is true because adjacent vertebrae in the vertebral column are connected by cartilaginous joints, which permit limited movements. The Reason (R) is also a true statement, as synovial joints are indeed characterised by a fluid-filled synovial cavity that allows considerable movement. However, the Reason (R) does not explain the Assertion (A) because the limited movement of the vertebral column is due to the presence of cartilaginous joints, not synovial joints. Therefore, both statements are true b