Question

Where is placenta of plant located and what is its function

Answer 1

Inside an ovary is one chamber, or locule; however, if there are many locules in a single ovary, this indicates that many carpels have been fused together. A locule houses one or more ovules. The placenta attaches an ovule to the ovary wall.

the placenta of plant is located  in a region corresponding somewhat to the margins of a leaf but is actually submarginal in position