The correct answer is A. Apple.
A true fruit is a seed-bearing structure that develops from the ovary of a flowering plant, whereas a false fruit is a fruit that develops from other parts of the flower, such as the receptacle or the calyx.
Apples are false fruits because they develop from the receptacle of the flower, not from the ovary. The receptacle is the part of the flower that supports the other parts, such as the petals, sepals, and stamens. In apples, the receptacle becomes enlarged and fleshy, and it is this part that we eat. The true fruit of an apple is the small, hard core inside the apple, which contains the seeds.
Dates, grapes, and plums are all true fruits because they develop from the ovary of the flower. The ovary is the part of the flower that contains the ovules, which develop into seeds. In dates, grapes, and plums, the ovary becomes enlarged and fleshy, and it is this part that we eat. The seeds of these fruits are located inside the flesh of the fruit.
In conclusion, the correct answer to the question “Which among the following is not a true fruit?” is A. Apple.