Bicarpellary gynoecium and oblique ovary occurs in
A. Mustard
B. Banana
C. Pisum
D. Brinjal

Hint:One of the most important characteristic features of the family Solanacae is Bicarpellary gynoecium with oblique. In this ovary is placed obliquely in a diagonal plane, showing axile placentation, and superior.

Complete answer:
To answer this question, first, we need to know about the meaning of bicarpellary gynoecium and oblique ovary. Bicarpellary gynoecium means having two carpels. Oblique ovary means the ovary is placed obliquely in a diagonal plane. It is present in the family Sonaceae. In this, the gynoecium is bicarpellary and syncarpous. And the ovary is superior, bilocular or obliquely placed. Also, in this placenta is seen many swollen ovules.
Now, let us find the solution from the option.
>Mustard has bicarpellary gynoecium separated by a persistent false partition, replum. The bilocular superior ovary with few too many ovules is present on the parietal placentae.
>Banana has multicarpellary gynoecium with an inferior ovary with 3 locules, each with numerous axile ovules.
>Pisum has monocarpellary, unilocular gynoecium with ovules on marginal placentation and superior ovary.
>According to the number of carpels, gynoecium is monocarpellary, bicarpellary, tricarpellary and multicarpellary. Brinjal has bicarpellary, syncarpous, bilocular or tetralocular gynoecium due to presence of pseudo septum multiple ovules on axile placentation with superior and obliquely placed ovaries.

Thus, the correct answer is option ‘D’. i.e. Brinjal.

Note:Brinjal is the common name for a perennial plant, Solanum melongena, of the potato or nightshade family Solanaceae, characterized by large leaves, an ovoid fruit with numerous, small seeds and white to purple flowers with a five-lobed corolla and yellow stamens. The name also is used for the fleshy, edible fruit of this plant, a botanical berry that is widely cultivated as a vegetable crop.