Biologically: The developed part of the pollinated pistil ovary and its appendages. It is also simply called "mi".
Practically: Used as fruits and vegetables.
Biologically, a fruit is a structure of angiosperms that contains seeds. Since the angiosperm seeds mature in the ovary, the ovary is the part that becomes the fruit, and almost all the angiosperm seeds are contained in the fruit. When we hear fruit, it gives the impression that it is meaty and edible because there are not a few seeds that form such fruit and it was an important food for humans. It is said that such fruits have evolved for the purpose of developing the food part of the animal around the seeds as a breeding strategy of the plant and spreading the seeds through the body of the animal by being eaten. Conceivable. Such evolution for food has different evolution directions depending on the object to be eaten, and the corresponding fruit is produced. For example, in those that have evolved to be eaten by birds, the result is above the trees, and the size is about several mm to match birds, which are often small, and they have a conspicuous color to appeal to the eyes. .. On the other hand, mammals have a strong sense of smell compared to birds, so many of them have evolved to give off a strong scent. In addition, there are fruits that have a distinctive color and a strong scent and have evolved to be easily preyed on by both birds and mammals. Since human beings feed on these fruits, fruit vegetables are cultivated in the fields, and fruit trees and their fruits are cultivated in orchards. In a broad sense, this also belongs to this trend. On the contrary, if it does not have such a part, it is not generally recognized as a fruit in many cases. Achene, described below, is often equated with seeds.
Gymnosperms do not form fruit, but some have edible parts near the seeds. There are examples such as Inumaki, whose flower bed develops softly and becomes edible.
From the animal's point of view, fruits are often sugar-rich and digestible foods. Therefore, it is not difficult to digest like herbivores that eat leaves and stems, and does not require much special adaptation. Therefore, it is better to think that fruit diet and herbivore are quite different. Animals with a frugivore-based diet are called frugivores (frugivores), but many animals classified as omnivores, even if they are not complete frugivores, eat frugivores. Some omnivores, such as oran wootan, are based on frugivore. Humans are also omnivorous animals and naturally eat fruits, but the most radical vegetarians are fruitarians and do not eat anything but fruits and seeds. This is similar to veganism in that it does not take all animal-derived foods such as eggs, dairy products and honey, as meat is not edible to kill animals. However, fruitarians refuse to even eat the parts of the plant that are directly linked to the survival of the plant, such as grains, root vegetables and leafy vegetables, that is, the parts that "kill the plant", and the fruits (fruits and fruits) and seeds that are not directly related to the survival of the plant. It is more radical in that it consumes only. However, it is impossible for human beings, who are originally omnivorous organisms, to rely solely on fruits and seeds for their diet, and some essential nutrients that are abundant in animals and grains are inevitably deficient.