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Simple fruits are formed from a single ovary and may contain one or many seeds. They can be either fleshy or dry. In fleshy fruit, during development, the pericarp and other accessory structures become the fleshy portion of the fruit. [2] The types of fleshy fruits are berries, pomes, and drupes. [3]
Many common language terms used for fruit and seeds differ from botanical classifications. For example, in botany, a fruit is a ripened ovary or carpel that contains seeds, e.g., an orange, pomegranate, tomato or a pumpkin. A nut is a type of fruit (and not a seed), and a seed is a ripened ovule. [4]
In angiosperms (flowering plants), the term locule usually refers to a chamber within an ovary (gynoecium or carpel) of the flower and fruits. Depending on the number of locules in the ovary, fruits can be classified as unilocular (uni-locular), bilocular, trilocular, or multilocular. The number of locules present in a gynoecium may be equal to ...
Technically the calybium is a nut, as its ovary wall becomes dry with the embryo loosely enclosed inside, and remains closed until germination. In the related family Betulaceae , notably in the genera Carpinus and Corylus , the cupule is replaced by an involucre , which differs in being more leafy in appearance, but performs a similar role in ...
The outer ovary wall becomes the thick spongy layer of the rind, while the inner ovary wall becomes very juicy with several seeds. The peel contains volatile oil glands in pits. The fleshy interior is composed of separate sections, called carpels , filled with fluid-filled vesicles that are specialized hair cells.
A fruit is the mature, ripened ovary of a flower following double fertilization in an angiosperm.Because gymnosperms do not have an ovary but reproduce through fertilization of unprotected ovules, they produce naked seeds that do not have a surrounding fruit, this meaning that juniper and yew "berries" are not fruits, but modified cones.
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Nuts, on the other hand, do not release seeds as they are a compound ovary containing both a single seed and the fruit. Nuts also do not split. In the Brazil nut, a lid on the capsule opens, but is too small to release the dozen or so seeds (the actual "Brazil nut" of commerce) within. These germinate inside the capsule after it falls to the ...