To determine which pair is wrongly matched, we need to evaluate the biological characteristics associated with each term in the options:
Given the above evaluations, the option that is wrongly matched is Uniflagellate gametes – Polysiphonia, because Polysiphonia, being a red alga, does not have gametes with flagella.
| Pair of skeletal parts | Category | |
|---|---|---|
| (a)$\,\,$ | Sternum and ribs$\,\,$ | Axial skeleton |
| (b)$\,\,$ | Clavicle and glenoid cavity$\,\,$ | Pelvic girdle |
| (c)$\,\,$ | Flumerus and ulna$\,\,$ | Appendicular skeleton |
| (d)$\,\,$ | Malleus and stapes$\,\,$ | Ear ossicles |