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Pith
Pith, or medulla, is a tissue in the stems of vascular plants. Pith is composed of soft, spongy parenchyma cells, which in some cases can store starch. In eudicotyledons, pith is located in the center of the stem. In monocotyledons, it extends only into roots. The pith is encircled by a ring of xylem; the xylem, in turn, is encircled by a ring of phloem. While new pith growth is usually white or pale in color, as the tissue ages it commonly darkens to a deeper brown color. In trees pith is generally present in young growth, but in the trunk and older branches the pith often gets replaced – in great part – by xylem. In some plants, the pith in the middle of the stem may dry out and disintegrate, resulting in a hollow stem. A few plants, such as walnuts, have distinctive chambered pith with numerous short cavities (see image at middle right). The cells in the peripheral parts of the pith may, in some plants, develop to be different from cells in the rest of the pith. Thi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pith Helmet
The pith helmet, also known as the safari helmet, salacot, sola topee, sun helmet, topee, and topi is a lightweight cloth-covered helmet made of sholapith. The pith helmet originates from the Spanish Empire, Spanish military adaptation of the native salakot headgear of the Philippines. It was often worn by European travellers and explorers in the varying climates found in Southeast Asia, Africa, and the tropics, but it was also used in many other contexts. It was routinely issued to colonial military personnel serving in warmer climates from the mid-nineteenth to the mid-twentieth century. The headdress remains in use in several military services in the 21st century. Definition Typically, a pith helmet derives from either the sola or "pith" plant, ''Aeschynomene aspera'', an Indian swamp plant, or from ''Aeschynomene paludosa''. In the narrowest definition, a pith helmet is a type of sun hat made from the wood of the pith plant. However, pith helmet may more broadly refer to this ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Phloem
Phloem (, ) is the living tissue in vascular plants that transports the soluble organic compounds made during photosynthesis and known as ''photosynthates'', in particular the sugar sucrose, to the rest of the plant. This transport process is called translocation. In trees, the phloem is the innermost layer of the bark, hence the name, derived from the Ancient Greek word (''phloiós''), meaning "bark". The term was introduced by Carl Nägeli in 1858. Different types of phloem can be distinguished. The early phloem formed in the growth apices is called protophloem. Protophloem eventually becomes obliterated once it connects to the durable phloem in mature organs, the metaphloem. Further, secondary phloem is formed during the thickening of stem structures. Structure Phloem tissue consists of conducting cells, generally called sieve elements, parenchyma cells, including both specialized companion cells or albuminous cells and unspecialized cells and supportive cells, such ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tissue (biology)
In biology, tissue is an assembly of similar cells and their extracellular matrix from the same embryonic origin that together carry out a specific function. Tissues occupy a Biological organisation#Levels, biological organizational level between cell (biology), cells and a complete organ (biology), organ. Accordingly, organs are formed by the functional grouping together of multiple tissues. The English word "tissue" Morphological derivation, derives from the French word "", the past participle of the verb tisser, "to weave". The study of tissues is known as histology or, in connection with disease, as histopathology. Xavier Bichat is considered as the "Father of Histology". Plant histology is Studied Space Shuttle designs, studied in both plant anatomy and Plant physiology, physiology. The classical tools for studying tissues are the Microtome#Applications, paraffin block in which tissue is embedded and then sectioned, the staining, histological stain, and the Microscope, o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ground Tissue
The ground tissue of plants includes all tissues that are neither dermal nor vascular. It can be divided into three types based on the nature of the cell walls. This tissue system is present between the dermal tissue and forms the main bulk of the plant body. # Parenchyma cells have thin primary walls and usually remain alive after they become mature. Parenchyma forms the "filler" tissue in the soft parts of plants, and is usually present in cortex, pericycle, pith, and medullary rays in primary stem and root. # Collenchyma cells have thin primary walls with some areas of secondary thickening. Collenchyma provides extra mechanical and structural support, particularly in regions of new growth. # Sclerenchyma cells have thick lignified secondary walls and often die when mature. Sclerenchyma provides the main structural support to the plant. #Aerenchyma cells are found in aquatic plants. They are also known to be parenchyma cells with large air cavities surrounded by irregul ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cleaning Tool
Cleaning tools include the following: *Acoustic cleaning * Air blaster * Air knife * Besom * Broom * Brush * Building maintenance unit * Camel-hair brush *Carbon dioxide cleaning * Carpet beater * Carpet sweeper *Chamois leather * Cleret * Cyclone dust collector *Dishwasher * Dry-ice blasting * Feather duster * Floor scrubber * Floorcloth * Hataki * Hot water extraction * Ice blasting (cleaning) * Laundroid * Laundry ball *Lint remover * Melamine foam * Microfibre cloth * Mop * Mop bucket cart * NAV-{{CO2 system * Needlegun scaler * Parts washer * Peg wood * Peshtemal *Pigging * Pipe cleaner * Pith wood * Posser *Pressure washing * Propane burnisher *Pumice * Reason washing machine * Scrubber (brush) * Shaker broom vise * Silent butler * Soap shaker * Sonic soot blowers * Sponge (material) * Squeegee * Steam mop * Strigil * Swiffer * Tawashi * Thor washing machine * Tongue cleaner * Turk's head brush *Vacuum cleaner * Vacuum truck * Vapor steam cleaner * Wash rack *Washing machine ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Banana Pith
Banana pith or banana stem, is a vegetable harvested from the starchy inner core of banana pseudostems. It is used similarly to heart of palms in the cuisines of the Philippines, Malaysia, Indochina, Sri Lanka, Myanmar and southern India. See also * Banana flower *Banana leaves * Palmyra sprout *''Deckenia nobilis'' *Sago Sago () is a starch extracted from the pith, or spongy core tissue, of various tropical palm stems, especially those of ''Metroxylon sagu''. It is a major staple food for the lowland peoples of New Guinea and the Maluku Islands, where it is c ... References {{Sri Lankan cuisine Stem vegetables Filipino cuisine Indian cuisine Malaysian cuisine Burmese cuisine Sri Lankan cuisine ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Micronesia
Micronesia (, ) is a subregion of Oceania, consisting of approximately 2,000 small islands in the Northwestern Pacific Ocean. It has a close shared cultural history with three other island regions: Maritime Southeast Asia to the west, Polynesia to the east, and Melanesia to the south—as well as with the wider community of Austronesian peoples. The region has a tropical marine climate and is part of the Oceanian realm. It includes four main archipelagos—the Caroline Islands, the Gilbert Islands, the Mariana Islands, and the Marshall Islands — as well as numerous islands that are not part of any archipelago. Political control of areas within Micronesia varies depending on the island, and is distributed among six sovereign nations. Some of the Caroline Islands are part of the Republic of Palau and some are part of the Federated States of Micronesia (often shortened to "FSM" or "Micronesia"—not to be confused with the identical name for the overall region). The Gi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tapioca
Tapioca (; ) is a starch extracted from the tubers of the cassava plant (''Manihot esculenta,'' also known as manioc), a species native to the North Region, Brazil, North and Northeast Region, Brazil, Northeast regions of Brazil, but which has now spread throughout parts of the world such as West Africa and Southeast Asia. It is a perennial shrub adapted to the hot conditions of tropical lowlands. Cassava copes better with poor soils than many other food plants. Tapioca is a staple food for millions of people in tropical countries. It provides only carbohydrate food value, and is low in protein, vitamins, and Mineral (nutrient), minerals. In other countries, it is used as a thickening agent in various manufactured foods. Etymology ''Tapioca'' is derived from the word ''tipi'óka'', its name in the Tupi–Guarani languages, Tupi language spoken by natives when the Portuguese first arrived in the Northeast Region of Brazil around 1500. This Tupi word is translated as 'sedimen ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Heart Of Palm
Heart of palm is a vegetable harvested from the inner core and growing bud of certain Palm tree, palm trees, most notably the coconut (''Cocos nucifera''), juçara (''Euterpe edulis''), açaí palm (''Euterpe oleracea''), sabal, palmetto (''Sabal'' spp.), and Bactris gasipaes, peach palm. Heart of palm may be eaten on its own, and often it is eaten in a salad. There are palm varieties that have become domesticated farm species as an alternative to sourcing from wild palms. The main variety that has been domesticated is ''Bactris gasipaes'', known in English as peach palm. This variety is the most widely used for canning. Peach palms are self-Sucker (botany), suckering and produce multiple Plant stem, stems, with up to 40 on one plant. This lets producers lower costs by harvesting several stems from a plant while avoiding the death of the palm. Another advantage is that the peach palm has been selectively bred to eliminate the thorns of its wild cousins. Since harvesting is still ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Taxus Wood
''Taxus'' is a genus of coniferous trees or shrubs known as yews in the family Taxaceae. Yews occur around the globe in temperate zones of the northern hemisphere, northernmost in Norway and southernmost in the South Celebes. Some populations exist in tropical highlands. The oldest known fossil species are from the Early Cretaceous. Morphology They are relatively slow-growing and can be very long-lived, and reach heights of , with trunk girth averaging . They have reddish Bark (botany), bark, lanceolate, flat, dark-green leaf, leaves long and broad, arranged spirally on the stem, but with the leaf bases twisted to align the leaves in two flat rows either side of the stem. The male cones are globose, across, and shed their pollen in early spring. Yews are mostly Plant sexuality, dioecious, but occasional individuals can be variably Plant sexuality, monoecious, or change sex with time. The conifer cone, seed cones are highly modified, each cone containing a single seed lon ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Elder Pith
An elder is someone with a degree of seniority or authority. Elder or elders may refer to: Positions Administrative * Elder (administrative title), a position of authority Cultural * North American Indigenous elder, a person who has and transmits cultural and philosophical knowledge ** Haudenosaunee Clan Mother * Australian Aboriginal elder, one who has gained recognition as a custodian of knowledge and lore, often a leader in administrative matters Religious * "The Elder", author of the Johannine epistles 2 John and 3 John in the New Testament * Elder (Christianity), a person valued for their wisdom and, in some churches and denominations, holding an administrative or oversight role ** Elder (Methodist), an ordained minister with responsibilities to preach and teach ** Elder (Anglican), a learned minister with responsibilities to teach and/or innovate ** Elder (Latter Day Saints), a priesthood office in the Melchizedek priesthood * Thero or Elder, an honorific term fo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aeschynomene Aspera
''Aeschynomene aspera'' is a species of flowering plant in the family Fabaceae. It is also known by the names sola (''Odia'' ସୋଲ), shola (''Bengali'' শোলা) sola pith plant, pith plant, laugauni (Hindi), Bendu-chettu ( Telugu), ponguchedi (Malayalam) or Netti (Tamil). The low density wood of this plant is used to make hats known as pith helmets or sola topis. It is native to Bangladesh, Bhutan, Cambodia, India, Indonesia, Laos, Malaysia, Myanmar, Nepal, Pakistan, Sri Lanka, Thailand, and Vietnam. It is an aquatic plant and is considered a minor weed of rice paddies across its range. Used part From the biological viewpoint, the used part is the wood of the stem; the plant's name presumably comes from the similarity of its spongy wood to the soft pith of harder woody plants. ''Aeschynomene'' spp. wood is one of the lightest woods in the world. Aeschynomene woods feel like pieces of expanded polystyrene or even lighter, and have a corky texture. They are bright whi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
