Select the incorrect matching of three items and their grouping category 
1. IIeum, ischium pubis              -   Form coxal bones of pelvic girdle 
2. Actin, myosin, troponin          -  Muscle proteins
3. Malleus, incus, stapes             - Ear osicles
4. Hyoid, zygomatic, sphenoid   - Skull bones 
Subtopic:  Appendicular Skeleton: Girdle |
From NCERT
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The pubic symphysis in the pelvic girdle is structurally significant because it:
1. Contains fibrous cartilage allowing slight movement
2. Contains dense fibrous connective tissue for full immobility
3. Contains synovial fluid for greater flexibility
4. Directly connects the femur with the pelvis
Subtopic:  Appendicular Skeleton: Girdle |
 58%
From NCERT
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