Identify which of the following fruits are false fruits?

(a) a, b, c, d
(b) b, c, d
(c) a, b
(d) c, d

Hint: True fruit is the transformation of the ovary after the fertilization in angiosperms in which seeds are protected and are edible.

Complete solution:
Fruits that form from the other parts of the plants like thalamus along with the development of ovary are known as thalamu. The examples of such fruits are apples, strawberries etc.
Additional Information:
The walls of the ovary transform and form the pericarp which is known as the wall of fruit. We know that fruits are of many varieties like fleshy fruits for example mango, orange, banana etc and dry fruits like almond, walnut etc. True fruits develop only from the ovary and other floral parts do not take place. Mango and coconut are formed directly from the ovaries and no accessory floral parts are involved; hence, they are known as true fruits. In few species, the fruits formed without the fertilization of male and female gametes and the process is known as parthenocarpy and fruits are known as parthenocarpic fruits. These fruits do not contain seeds and the process can be triggered by using growth hormones like in bananas.
So, the answer is 'c, d'.

Note: Apomixis is the process which is used by the plants to produce seeds without meiosis (reductional division) and syngamy. That means the process looks like sexual reproduction but does not exhibit fertilization. It is similar to parthenocarpy but in it fruit is formed without fertilization.