banana, fruit of the genus Musa, of the family Musaceae, one of the most important fruit crops of the world. The banana is grown in the tropics, and, though it is most widely consumed in those regions, it is valued worldwide for its flavour, nutritional value, and availability throughout the year. Cavendish, or dessert, bananas are most commonly eaten fresh, though they may be fried or mashed and chilled in pies or puddings. They may also be used to flavour muffins, cakes, or breads. Cooking varieties, or plantains, are starchy rather than sweet and are grown extensively as a staple food source in tropical regions; they are cooked when ripe or immature. A ripe fruit contains as much as 22 percent of carbohydrate and is high in dietary fibre, potassium, manganese, and vitamins B6 and C.
Username: Khairool Published on 2024-11-29 10:17:08 ID NUMBER: 125818
Given that each banana variety is propagated clonally, there is very little genetic diversity in the domesticated plants. This makes bananas especially vulnerable to pests and diseases, as a novel pathogen or pest could quickly decimate a variety if it were to exploit a genetic weakness among the clones. Indeed, this very phenomenon occurred in the late 1950s with the Gros Michel dessert variety, which had dominated the world’s commercial banana business. Richer and sweeter than the modern Cavendish, the Gros Michel fell victim to an invading soil fungus that causes Panama disease, a form of Fusarium wilt. Powerless to breed resistance into the sterile clones and unable to rid the soil of the fungus, farmers were soon forced to abandon the Gros Michel in favour of the hardier Cavendish. Although the Cavendish has thus far been resistant to such a pestilent invasion, its lack of genetic diversity leaves it equally vulnerable to evolving pathogens and pests. Indeed, a strain of Panama disease known as Tropical Race (TR) 4 has been a threat to the Cavendish since the 1990s, and many scientists worry that the Cavendish too will eventually go extinct.
Banana plants thrive naturally on deep, loose, well-drained soils in humid tropical climates, and they are grown successfully under irrigation in such semiarid regions as southern Jamaica. Suckers and divisions of the rhizome are used as planting material; the first crop ripens within 10 to 15 months, and thereafter fruit production is more or less continuous. Frequent pruning is required to remove surplus growth and prevent crowding in a banana plantation. Desirable commercial bunches of bananas consist of nine hands or more and weigh 22–65 kg (49–143 pounds). Three hundred or more such bunches may be produced annually on one acre of land and are harvested before they fully ripen on the plant. For export, the desired degree of maturity attained before harvest depends upon distance from market and type of transportation, and ripening is frequently induced artificially after shipment by exposure to ethylene gas.
The banana plant is a gigantic herb that springs from an underground stem, or rhizome, to form a false trunk 3–6 metres (10–20 feet) high. This trunk is composed of the basal portions of leaf sheaths and is crowned with a rosette of 10 to 20 oblong to elliptic leaves that sometimes attain a length of 3–3.5 metres (10–11.5 feet) and a breadth of 65 cm (26 inches). A large flower spike, carrying numerous yellowish flowers protected by large purple-red bracts, emerges at the top of the false trunk and bends downward to become bunches of 50 to 150 individual fruits, or fingers. The individual fruits, or bananas, are grouped in clusters, or hands, of 10 to 20. After a plant has fruited, it is cut down to the ground, because each trunk produces only one bunch of fruit. The dead trunk is replaced by others in the form of suckers, or shoots, which arise from the rhizome at roughly six-month intervals. The life of a single rhizome thus continues for many years, and the weaker suckers that it sends up through the soil are periodically pruned, while the stronger ones are allowed to grow into fruit-producing plants.
banana, fruit of the genus Musa, of the family Musaceae, one of the most important fruit crops of the world. The banana is grown in the tropics, and, though it is most widely consumed in those regions, it is valued worldwide for its flavour, nutritional value, and availability throughout the year. Cavendish, or dessert, bananas are most commonly eaten fresh, though they may be fried or mashed and chilled in pies or puddings. They may also be used to flavour muffins, cakes, or breads. Cooking varieties, or plantains, are starchy rather than sweet and are grown extensively as a staple food source in tropical regions; they are cooked when ripe or immature. A ripe fruit contains as much as 22 percent of carbohydrate and is high in dietary fibre, potassium, manganese, and vitamins B6 and C.
banana, fruit of the genus Musa, of the family Musaceae, one of the most important fruit crops of the world. The banana is grown in the tropics, and, though it is most widely consumed in those regions, it is valued worldwide for its flavour, nutritional value, and availability throughout the year. Cavendish, or dessert, bananas are most commonly eaten fresh, though they may be fried or mashed and chilled in pies or puddings. They may also be used to flavour muffins, cakes, or breads. Cooking varieties, or plantains, are starchy rather than sweet and are grown extensively as a staple food source in tropical regions; they are cooked when ripe or immature. A ripe fruit contains as much as 22 percent of carbohydrate and is high in dietary fibre, potassium, manganese, and vitamins B6 and C.
Domesticated goats are descended from the pasang (Capra aegagrus), which is probably native to Asia, the earliest records being Persian. In China, Great Britain, Europe, and North America, the domestic goat is primarily a milk producer, with a large portion of the milk being used to make cheese. One or two goats will supply sufficient milk for a family throughout the year and can be maintained in small quarters, where it would be uneconomical to keep a cow. For large-scale milk production, goats are inferior to cattle in the temperate zone but superior in the torrid and frigid zones. Goat flesh is edible, that from young kids being quite tender and more delicate in flavour than lamb, which it resembles. Some breeds, notably the Angora and Cashmere, are raised for their wool (see also wool; cashmere; Angora goat); young goats are the source of kid leather.
Have you ever seen a domestic silkworm? Not so cute. But if a silkworm hatched from its cocoon today, you'd find the majestic silk moth. These cute bugs are light brown to blond with cream-colored wings.
A silk moth lives for about three days. During that time, it doesn't eat or fly.
banana, fruit of the genus Musa, of the family Musaceae, one of the most important fruit crops of the world. The banana is grown in the tropics, and, though it is most widely consumed in those regions, it is valued worldwide for its flavour, nutritional value, and availability throughout the year. Cavendish, or dessert, bananas are most commonly eaten fresh, though they may be fried or mashed and chilled in pies or puddings. They may also be used to flavour muffins, cakes, or breads. Cooking varieties, or plantains, are starchy rather than sweet and are grown extensively as a staple food source in tropical regions; they are cooked when ripe or immature. A ripe fruit contains as much as 22 percent of carbohydrate and is high in dietary fibre, potassium, manganese, and vitamins B6 and C.
The domestic canary, often simply known as the canary (Serinus canaria forma domestica[4]), is a domesticated form of the wild canary, a small songbird in the finch family originating from the Macaronesian Islands of the Azores, Madeira and the Canary Islands.[
The domestic pigeon (Columba livia domestica or Columba livia forma domestica)[2] is a pigeon subspecies that was derived from the rock dove or rock pigeon. The rock pigeon is the world's oldest domesticated bird. Mesopotamian cuneiform tablets mention the domestication of pigeons more than 5,000 years ago, as do Egyptian hieroglyphics. Pigeons were most likely domesticated in the Mediterranean at least 2000–5000 years ago, and may have been domesticated earlier as a food source.[3] Research suggests that domestication of pigeons occurred as early as 10,000 years ago.[4]
Duck is the common name for numerous species of waterfowl in the family Anatidae. Ducks are generally smaller and shorter-necked than swans and geese, which are members of the same family. Divided among several subfamilies, they are a form taxon; they do not represent a monophyletic group (the group of all descendants of a single common ancestral species), since swans and geese are not considered ducks. Ducks are mostly aquatic birds, and may be found in both fresh water and sea water.
