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Indehiscent fruit do not open at maturity in a pre-defined way, but rely on predation or decomposition to release the seeds. Pumpkin seeds are not released until the fruit is eaten or decays Peanut seeds are contained in indehiscent legume fruit
An assortment of different caryopses. Wheat spikelet with the three anthers sticking out. Caryopsis cross-section. In botany, a caryopsis (pl. caryopses) is a type of simple fruit—one that is monocarpellate (formed from a single carpel) and indehiscent (not opening at maturity) [1] and resembles an achene, except that in a caryopsis the pericarp is fused with the thin seed coat.
Some fruits are indehiscent, and do not open to disperse the seeds. Xerochasy is dehiscence that occurs upon drying, and hygrochasy is dehiscence that occurs upon wetting, the fruit being hygroscopic. Dehiscent fruits that are derived from one carpel are follicles or legumes, and those derived from multiple carpels are capsules or siliques. [3]
A few capsules are indehiscent, for example those of Adansonia digitata, Alphitonia, and Merciera. Capsules are often classified into four types, depending on the type and location of dehiscence (see Simpson Fig 9.41 [ 2 ] and Hickey & King [ 3 ] ).
This original usage is preserved in a culinary sense, where many dry seeds are called "nuts" and come from indehiscent fruits. Almonds, cashews, pistachios, and Brazil nuts, [3] are examples of "tree nuts" that are not true nuts. Peanuts are a unique case, and grow underground from a legume. Nuts are an energy-dense and nutrient-rich food ...
The indehiscent (remaining closed) schizocarps of the parsnip (Pastinaca sativa), like that of the carrot, will split into two parts. The indehiscent schizocarp of musk mallow (Malva moschata) will later split into segments called mericarps. A schizocarp / ˈ s k ɪ z ə k ɑːr p / is a dry fruit that, when mature, splits up into mericarps.
Per Britannica, pumpkin is technically a type of berry called a pepo, which is a fruit that has a hard outer layer and no dividing chambers. (And for the record, squash is also technically a fruit.)
As a general rule, the accessory fruit is a combination of several floral organs, including the ovary. In contrast, true fruit forms exclusively from the ovary of the flower. [1] Accessory fruits are usually indehiscent, meaning that they do not split open to release seeds when they have reached maturity. [2]