Which of the following statement(s) is/are correct about the fruit?

1. Fruit is a mature or ripened ovary, developed before fertilization.
2. It consists of a wall or pericarp and seeds.
3. When pericarp is thick and fleshy, it is differentiated into outer mesocarp, middle epicarp and the inner endocarp.
4. In mango and coconut, the fruit is known as a berry.