Berry is a simple fruit
The botanical definition of a berry is a simple fruit produced from a single ovary, such as a grape or a tomato. The berry is the most common type of fleshy fruit in which the entire ovary wall ripens into an edible pericarp. The flowers of these plants have a superior ovary formed by the fusion of two or more carpels. The seeds are embedded in the flesh of the ovary.
However, in everyday English, a berry is a term for any small edible fruit. Most berries are juicy, round or semi-oblong, brightly coloured, sweet or sour, and don't have a stone or pit, although many seeds may be present. Many berries, such as the tomato are edible, but others in the same family, such as the fruits of the deadly nightshade (Atropa belladonna) and the fruits of the potato (Solanum tuberosum) are poisonous to humans. A plant that bears berries is said to be bacciferous.
In false berries, like blueberries and cranberries, the fruit is formed from other parts of the flower in addition to the ovary. Although referred to as berries in common language, aggregate fruits like raspberries are also not true berries but collections of small drupes, and accessory fruits like strawberries are formed from parts of the plant other than the ovary. As explained in below, none of these is a true berry.
Several types of common "berries", none of which is a berry by botanical definition:
The blueberry is a false berry, blackberries are aggregate fruit, and strawberries are accessory fruit.
In botanical language, a berry or true berry is a simple fruit having seeds and pulp produced from a single ovary. The true berry is the most common type of fleshy fruit in which the entire ovary wall ripens into an edible pericarp. The flowers of these plants had a superior ovary and one or more carpels within a thin covering and fleshy interiors. The seeds are embedded in the common flesh of the ovary.
Examples of true berries include
* Grape, Vitis vinifera
* Tomato, Lycopersicon esculentum and other species of the family Solanaceae, many of which are commercial importance, such as Capsicum, and aubergine (Solanum melongena) and Wolfberry or Goji berries (Lycium barbarum, Lycium spp.; Solanaceae).
* Barberry (Berberis; Berberidaceae)
* Currant (Ribes spp.; Grossulariaceae), red, black, and white types
* Elderberry (Sambucus niger; Caprifoliaceae)
* Gooseberry (Ribes spp.; Grossulariaceae)
* Honeysuckle: the berries of some species (called honeyberries) are edible, others are poisonous (Lonicera spp.; Caprifoliaceae)
* Mayapple (Podophyllum spp.; Berberidaceae)
* Nannyberry or sheepberry (Viburnum spp.; Caprifoliaceae)
* Oregon-grape (Mahonia aquifolium; Berberidaceae)
* Sea-buckthorn (Hippophae rhamnoides; Elaeagnaceae)
The fruit of citrus, such as the orange, kumquat and lemon, is a modified berry called a hesperidium.
Not a botanical berry
Many "berries" are not actual berries by the scientific definition, but fall into one of these categories:
Drupes are fruits produced from a single-seeded ovary or achene.
* Hackberry (Celtis spp.; Cannabaceae)
* Açaí (Euterpe), a palm fruit native to the Amazon region
Epigynous fruits are berry-like fruits formed from inferior ovaries, in which the receptacle is included. Notable examples are the fruits of the Ericaceae, including blueberry, huckleberry and cranberry.
* Bearberry (Arctostaphylos spp.), Crowberry (Empetrum spp.) and Cranberry
* Lingonberry (Vaccinium vitis-idaea)
* Strawberry Tree (Arbutus unedo), not to be confused with the actual strawberry (Fragaria)
* Sea Grape (Coccoloba uvifera; Polygonaceae)
* The fruit of cucumbers, melons and their relatives are modified berries called "pepoes".
Compound fruits are groups or aggregates of multiple individual fruits, and include:
* Aggregate fruits are multiple fruits with seeds from different ovaries of a single flower, such as blackberry, raspberry, bayberry, and boysenberry
* Multiple fruit, are the fruits of separate flowers, packed closely together. The mulberry, for example, is essentially like a cluster of grapes, but tiny and compressed into one "berry".
* Other accessory fruit, where the edible part is not generated by the ovary, such as the strawberry for which the seed-like achenes are actually the "fruit" derived from the ovary.
Raspberries are not true berries, but aggregate fruits composed of many drupes
* Blackberry, of which there are many species and hybrids, such as dewberry, boysenberry, olallieberry, and tayberry (genus Rubus)
* Cloudberry (Rubus chamaemorus)
* Loganberry (Rubus loganobaccus)
* Raspberry, Rubus idaeus and some other species of Rubus
* Salmonberry (Rubus spectabilis)
* Thimbleberry (Rubus parviflorus)
* Wineberry (Rubus phoenicolasius)
Color and medical benefits
By contrasting in color with their background, berries are more attractive to animals that eat them, aiding in the dispersal of the plant's seeds.
Berry colors are due to natural plant pigments. Many are polyphenols such as the flavonoids, anthocyanins, and tannins localized mainly in berry skins and seeds. Berry pigments are usually antioxidants and thus have oxygen radical absorbance capacity ("ORAC") that is high among plant foods. Together with good nutrient content, ORAC distinguishes several berries within a new category of functional foods called "superfruits" and is identified by DataMonitor as one of the top 10 food categories for growth in 2008
The term fruit has different meanings dependent on context, and the term is not synonymous in food preparation and biology. Fruits are the means by which flowering plants disseminate seeds, and the presence of seeds indicates that a structure is most likely a fruit, though not all seeds come from fruits.
No single terminology really fits the enormous variety that is found among plant fruits. The term 'false fruit' (pseudocarp, accessory fruit) is sometimes applied to a fruit like the fig (a multiple-accessory fruit; see below) or to a plant structure that resembles a fruit but is not derived from a flower or flowers. Some gymnosperms, such as yew, have fleshy arils that resemble fruits and some junipers have berry-like, fleshy cones. The term "fruit" has also been inaccurately applied to the seed-containing female cones of many conifers.
Botanic fruit and culinary fruit
Many true fruits, in a botanical sense, are treated as vegetables in cooking and food preparation because they are not sweet. These culinary vegetables include cucurbits (e.g., squash, pumpkin, and cucumber), tomatoes, peas, beans, corn, eggplant, and sweet pepper; some spices, such as allspice and chilies, are botanical fruits. Occasionally, though rarely, a culinary "fruit" is not a true fruit in the botanical sense. For example, rhubarb is often referred to as a fruit, because it is used to make sweet desserts such as pies, though only the petiole of the rhubarb plant is edible. In the culinary sense, a fruit is usually any sweet tasting plant product associated with seed(s), a vegetable is any savoury or less sweet plant product, and a nut is any hard, oily, and shelled plant product.
Technically, a cereal grain is a fruit termed a caryopsis. However, the fruit wall is very thin and fused to the seed coat so almost all of the edible grain is actually a seed. Therefore, cereal grains, such as corn, wheat and rice are better considered edible seeds, although some references list them as fruits. Edible gymnosperm seeds are often misleadingly given fruit names, e.g. pine nuts, ginkgo nuts, and juniper berries.
A fruit is a ripened ovary. Inside the ovary is one or more ovules where the megagametophyte contains the mega gamete or egg cell. The ovules are fertilized in a process that starts with pollination, which involves the movement of pollen from the stamens to the stigma of flowers. After pollination, a tube grows from the pollen through the stigma into the ovary to the ovule and sperm are transferred from the pollen to the ovule, within the ovule the sperm unites with the egg, forming a diploid zygote. Fertilization in flowering plants involves both plasmogamy, the fusing of the sperm and egg protoplasm and karyogamy, the union of the sperm and egg nucleus. When the sperm enters the nucleus of the ovule and joins with the megagamete and the endosperm mother cell, the fertilization process is completed. As the developing seeds mature, the ovary begins to ripen. The ovules develop into seeds and the ovary wall, the pericarp, may become fleshy (as in berries or drupes), or form a hard outer covering (as in nuts). In some cases, the sepals, petals and/or stamens and style of the flower fall off. Fruit development continues until the seeds have matured. In some multiseeded fruits, the extent to which the flesh develops is proportional to the number of fertilized ovules. The wall of the fruit, developed from the ovary wall of the flower, is called the pericarp. The pericarp is often differentiated into two or three distinct layers called the exocarp (outer layer, also called epicarp), mesocarp (middle layer), and endocarp (inner layer). In some fruits, especially simple fruits derived from an inferior ovary, other parts of the flower (such as the floral tube, including the petals, sepals, and stamens), fuse with the ovary and ripen with it. The plant hormone ethylene causes ripening. When such other floral parts are a significant part of the fruit, it is called an accessory fruit. Since other parts of the flower may contribute to the structure of the fruit, it is important to study flower structure to understand how a particular fruit forms.
Fruits are so diverse that it is difficult to devise a classification scheme that includes all known fruits. Many common terms for seeds and fruit are incorrectly applied, a fact that complicates understanding of the terminology. Seeds are ripened ovules; fruits are the ripened ovaries or carpels that contain the seeds. To these two basic definitions can be added the clarification that in botanical terminology, a nut is not a type of fruit and not another term for seed, on the contrary to common terminology.
There are three basic types of fruits:
1. Simple fruit
2. Aggregate fruit
3. Multiple fruit
Epigynous berries are simple fleshy fruit. From top right: cranberries, lingonberries, blueberries red huckleberries
Simple fruits can be either dry or fleshy, and result from the ripening of a simple or compound ovary with only one pistil. Dry fruits may be either dehiscent (opening to discharge seeds), or indehiscent (not opening to discharge seeds). Types of dry, simple fruits, with examples of each, are:
* achene – (dandelion seeds, strawberry seeds)
* capsule – (Brazil nut)
* caryopsis – (wheat)
* fibrous drupe – (coconut, walnut)
* follicle – (milkweed, magnolia)
* legume – (pea, bean, peanut)
* nut – (hazelnut, beech, oak acorn)
* samara – (elm, ash, maple key)
* schizocarp – (carrot seed)
* silique – (radish seed)
* silicle – (shepherd's purse)
* utricle – (beet)
Lilium unripe capsule fruit
Fruits in which part or all of the pericarp (fruit wall) is fleshy at maturity are simple fleshy fruits. Types of fleshy, simple fruits (with examples) are:
* berry – (redcurrant, gooseberry, tomato, avocado)
* stone fruit or drupe (plum, cherry, peach, apricot, olive)
* false berry – Epigynous accessory fruits (banana, cranberry, strawberry (edible part).)
* pome – accessory fruits (apple, pear, rosehip, saskatoon berry)
An aggregate fruit, or etaerio, develops from a flower with numerous simple pistils. An example is the raspberry, whose simple fruits are termed drupelets because each is like a small drupe attached to the receptacle. In some bramble fruits (such as blackberry) the receptacle is elongated and part of the ripe fruit, making the blackberry an aggregate-accessory fruit. The strawberry is also an aggregate-accessory fruit, only one in which the seeds are contained in achenes. In all these examples, the fruit develops from a single flower with numerous pistils.
Some kinds of aggregate fruits are called berries, yet in the botanical sense they are not.
A multiple fruit is one formed from a cluster of flowers (called an inflorescence). Each flower produces a fruit, but these mature into a single mass. Examples are the pineapple, edible fig, mulberry, osage-orange, and breadfruit.
In some plants, such as this noni, flowers are produced regularly along the stem and it is possible to see together examples of flowering, fruit development, and fruit ripening.
In the photograph on the right, stages of flowering and fruit development in the noni or Indian mulberry (Morinda citrifolia) can be observed on a single branch. First an inflorescence of white flowers called a head is produced. After fertilization, each flower develops into a drupe, and as the drupes expand, they become connate (merge) into a multiple fleshy fruit called a syncarpet.
There are also many dry multiple fruits, e.g.
* Tuliptree, multiple of samaras.
* Sweet gum, multiple of capsules.
* Sycamore and teasel, multiple of achenes.
* Magnolia, multiple of follicles.
To summarize common types of fruit (examples follow in the table below):
* Berry – simple fruit and seeds created from a single ovary
o Pepo – Berries where the skin is hardened, like cucurbits
o Hesperidium – Berries with a rind, like most citrus fruit
* Epigynous berries(false berries) – Epigynous fruit made from a part of the plant other than a single ovary
* Compound fruit, which includes:
o Aggregate fruit – multiple fruits with seeds from different ovaries of a single flower
o Multiple fruit – fruits of separate flowers, packed closely together
* Other accessory fruit – where the edible part is not generated by the ovary
Types of fruit:
Pepo, Hesperidium, False berry (Epigynous), Aggregate fruit, Multiple fruit.
Other accessory fruit:
Blackcurrant, Redcurrant, Gooseberry, Tomato, Eggplant, Guava, Lucuma, Chili pepper, Pomegranate, Kiwifruit, Grape,, Pumpkin, Gourd, Cucumber, Melon, Orange, Lemon, Lime, Grapefruit, Banana, Cranberry, Blueberry, Blackberry, Raspberry, Boysenberry, Hedge apple, Pineapple, Fig, Mulberry, Apple, Apricot, Peach, Cherry, Green bean, Sunflower seed, Strawberry, plum, pear
An arrangement of fruits commonly thought of as vegetables, including tomatoes and various squash
Seedlessness is an important feature of some fruits of commerce. Commercial cultivars of bananas and pineapples are examples of seedless fruits. Some cultivars of citrus fruits (especially navel oranges), satsumas, mandarin oranges table grapes, grapefruit, and watermelons are valued for their seedlessness. In some species, seedlessness is the result of parthenocarpy, where fruits set without fertilization. Parthenocarpic fruit set may or may not require pollination. Most seedless citrus fruits require a pollination stimulus; bananas and pineapples do not. Seedlessness in table grapes results from the abortion of the embryonic plant that is produced by fertilization, a phenomenon known as stenospermocarpy which requires normal pollination and fertilization.
Variations in fruit structures largely depend on the mode of dispersal of the seeds they contain. This dispersal can be achieved by animals, wind, water, or explosive dehiscence.
Some fruits have coats covered with spikes or hooked burrs, either to prevent themselves from being eaten by animals or to stick to the hairs, feathers or legs of animals, using them as dispersal agents. Examples include cocklebur and unicorn plant.
The sweet flesh of many fruits is "deliberately" appealing to animals, so that the seeds held within are eaten and "unwittingly" carried away and deposited at a distance from the parent. Likewise, the nutritious, oily kernels of nuts are appealing to rodents (such as squirrels) who hoard them in the soil in order to avoid starving during the winter, thus giving those seeds that remain uneaten the chance to germinate and grow into a new plant away from their parent.
Other fruits are elongated and flattened out naturally and so become thin, like wings or helicopter blades, e.g. maple, tuliptree and elm. This is an evolutionary mechanism to increase dispersal distance away from the parent via wind. Other wind-dispersed fruit have tiny parachutes, e.g. dandelion and salsify.
Coconut fruits can float thousands of miles in the ocean to spread seeds. Some other fruits that can disperse via water are nipa palm and screw pine.
Some fruits fling seeds substantial distances (up to 100 m in sandbox tree) via explosive dehiscence or other mechanisms, e.g. impatiens and squirting cucumber.
Many hundreds of fruits, including fleshy fruits like apple, peach, pear, kiwifruit, watermelon and mango are commercially valuable as human food, eaten both fresh and as jams, marmalade and other preserves. Fruits are also in manufactured foods like cookies, muffins, yoghurt, ice cream, cakes, and many more. Many fruits are used to make beverages, such as fruit juices (orange juice, apple juice, grape juice, etc) or alcoholic beverages, such as wine or brandy. Apples are often used to make vinegar. Fruits are also used for gift giving, Fruit Basket and Fruit Bouquet are some common forms of fruit gifts.
Many vegetables are botanical fruits, including tomato, bell pepper, eggplant, okra, squash, pumpkin, green bean, cucumber and zucchini. Olive fruit is pressed for olive oil. Spices like vanilla, paprika, allspice and black pepper are derived from berries.
Fruits are generally high in fiber, water and vitamin C. Fruits also contain various phytochemicals that do not yet have an RDA/RDI listing under most nutritional factsheets, and which research indicates are required for proper long-term cellular health and disease prevention. Regular consumption of fruit is associated with reduced risks of cancer, cardiovascular disease, stroke, Alzheimer disease, cataracts, and some of the functional declines associated with aging.
Because fruits have been such a major part of the human diet, different cultures have developed many different uses for various fruits that they do not depend on as being edible. Many dry fruits are used as decorations or in dried flower arrangements, such as unicorn plant, lotus, wheat, annual honesty and milkweed. Ornamental trees and shrubs are often cultivated for their colorful fruits, including holly, pyracantha, viburnum, skimmia, beautyberry and cotoneaster.
Fruits of opium poppy are the source of opium which contains the drugs morphine and codeine, as well as the biologically inactive chemical theabaine from which the drug oxycodone is synthysized. Osage orange fruits are used to repel cockroaches. Bayberry fruits provide a wax often used to make candles. Many fruits provide natural dyes, e.g. walnut, sumac, cherry and mulberry. Dried gourds are used as decorations, water jugs, bird houses, musical instruments, cups and dishes. Pumpkins are carved into Jack-o'-lanterns for Halloween. The spiny fruit of burdock or cocklebur were the inspiration for the invention of Velcro.
Coir is a fibre from the fruit of coconut that is used for doormats, brushes, mattresses, floortiles, sacking, insulation and as a growing medium for container plants. The shell of the coconut fruit is used to make souvenir heads, cups, bowls, musical instruments and bird houses.
Fruit is often also used as a subject of still life paintings.
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