When an ovary is placed on the receptacle above the other floral parts it is referred to as

Step 1: Analyze the question The question asks for the term used when the ovary sits on the receptacle above the other floral parts (sepals, petals, stamens).

Step 2: The concept The position of the ovary relative to the other floral parts is described as follows:

• Superior ovary (hypogynous flower): The ovary sits above the point where the sepals, petals and stamens attach. These parts are attached below the ovary. Examples: hibiscus, tomato, pawpaw.
• Inferior ovary (epigynous flower): The ovary sits below the attachment point of the other floral parts, so they appear to grow from the top of the ovary. Examples: cucumber, guava, sunflower.
• Half-inferior (or half-superior) ovary (perigynous flower): The ovary is partly sunk into the receptacle, so the other floral parts attach around its middle.

Step 3: Apply to the question The ovary is placed on the receptacle above the other floral parts. This is the definition of a superior ovary, and the flower is described as hypogynous.

Step 4: Answer The correct option is B. superior ovary.

Tip: Think of the position of the ovary itself. Superior means the ovary is higher than the other parts, and inferior means it is lower. Remember the pairing "superior = hypogynous" and "inferior = epigynous". Hibiscus is the standard Nigerian textbook example of a superior ovary.