Do all the one seeded fruits have big seed why or why not?

Not all one-seeded fruits have large seeds; the size of the seed depends on the plant species and its evolutionary adaptations. One-seeded fruits, like berries or drupes, can have small seeds, as seen in the case of cherries, which have a relatively small pit. The seed size is often influenced by factors such as dispersal methods, nutrient storage, and the plant's reproductive strategy. Thus, while some one-seeded fruits may have large seeds, others can be quite small.