In a certain type of flower, the margin of the thalamus grows upward enclosing the ovary completely and getting fused with it, while the other parts of the flower arise above the ovary. Which of the following plants exhibits this floral characteristic?

Step-by-step solution

The given description defines an epigynous flower, in which the ovary is said to be inferior. Examples of plants with epigynous flowers include guava, cucumber, and the ray florets of sunflower. Mustard and brinjal have hypogynous flowers (superior ovary). Plum has perigynous flowers (half-inferior ovary). Answer: Guava