Fruit formation from the thalamus instead of ovary is known as false fruit. The most common examples are

In botany, fruits are classified based on the floral parts from which they develop:

• True Fruits: These develop solely from the mature, ripened ovary after fertilization. Examples include mango, orange, guava, and cherry.
• False Fruits (Pseudocarps): These develop from the ovary along with other floral parts, most commonly the thalamus (receptacle).

According to NCERT and standard biological texts, apple and strawberry are the most common examples of false fruits. In an apple, the fleshy edible part is the enlarged thalamus that surrounds the ovary (the core). Similarly, in a strawberry, the fleshy red part is the ripened thalamus, while the tiny structures on the surface (achenes) are the actual fruits derived from the ovaries. Cashew is another notable example where the "nut" is the true fruit and the fleshy "apple" is the pedicel/thalamus.