Find the incorrectly matched pair w.r.t placentation.
Marginal – Placenta forms a ridge along the ventral suture – Arachis
Parietal – Ovary becomes two chambered due to replum – Primrose
Free central – Ovules are borne on central axis – Dianthus
Basal – Placenta develops at the base of ovary – Marigold
Parietal – Ovary becomes two chambered due to formation of replum – Mustard, Argemone.