frond definition biology
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- HOME >> BIOLOGY >> DICTIONARY. A frond is a large leaf with many divisions to it, and the term is typically used for the leaves of palms, ferns or cycads. Palm branch (symbol) From Wikipedia, the free encyclopedia (Redirected from Palm frond) ... shown holding a palm frond, representing the victory of spirit ...
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- Fern. A fern is a leafy vascular plant that does not flower. Its leaves are called fronds, and it reproduces with the help of spores. There are many varieties of fern, around 12,000 species, making it the largest family of plants.Ferns are versatile plants; they grow in a variety of conditions all over the world, though most of them need a lot of moisture to survive.Ferns have been around for centuries with some fossils indicating up to 360 million years ago.ts leaves are called fronds, and it reproduces with the help of spores. There are many varieties of fern, around 12,000 species, making it the largest family of plants. Ferns are versatile plants; they grow in a variety of conditions all over the world, though most of them need a lot of moisture to survive.
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Bracken Bracken (Pteridium) is a genus of large, coarse ferns in the family Dennstaedtiaceae. Ferns (Pteridophyta) are vascular plants that have alternating generations, large plants that produce spores and small plants that produce sex cells (eggs and sperm).Brackens are noted for their large, highly divided leaves.ike other ferns, brackens do not have seeds or fruits, but the immature fronds, known as fiddleheads, are sometimes eaten, although some are thought to be carcinogenic. (see Poisoning). The word bracken is of Old Norse origin, related to Swedish braeken bräken And danish, bregne both meaning. fern
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- : one of a pair of cellular organelles that occur especially in animals, are adjacent to the nucleus, function in the formation of the spindle apparatus during cell division, and consist of a cylinder with nine microtubules arranged peripherally in a circle — see cell illustration. See centriole defined for kids. one of a pair of cellular organelles that occur especially in animals, are adjacent to the nucleus, function in the formation of the spindle apparatus during cell division, and consist of a cylinder with nine microtubules arranged peripherally in a circle — see cell illustration. See centriole defined for kids.
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frond Definition of frond. 1  1 : a large leaf (especially of a palm or fern) usually with many divisions. 2  2 : a thallus or thalloid shoot (as of a lichen or seaweed) resembling a leaf.
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mitochondrion (mī'tə-kŏn'drē-ən) Plural mitochondria. A structure in the cytoplasm of all cells except bacteria in which food molecules (sugars, fatty acids, and amino acids) are broken down in the presence of oxygen and converted to energy in the form of ATP. Mitochondria have an inner and outer membrane.
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- Mitochondria: Structures located in the cell's cytoplasm outside the nucleus. Mitochondria are responsible for energy production. Each consists of two sets of membranes: a smooth, continuous outer coat and an inner membrane arranged in tubules or in folds that form plate-like double membranes (cristae).The mitochrondria are the principal energy source of the cell.itochondria are responsible for energy production. Each consists of two sets of membranes: a smooth, continuous outer coat and an inner membrane arranged in tubules or in folds that form plate-like double membranes (cristae).
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- Chloroplast. Definition. noun. Chlorophyll-containing plastid found within the cells of plants and other photosynthetic eukaryotes. Supplement. Within this organelle are disk-shaped structures called thylakoids that function as the site of photosynthesis.
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Fern A fern is a member of a group of approximately 12,000 species of vascular plants that reproduce via spores and have neither seeds nor flowers.They differ from mosses by being vascular (i.e. having water-conducting vessels). They have stems and leaves, like other vascular plants.he gametophytes of ferns, however, are very different from those of seed plants. Instead, they resemble liverworts. A fern gametophyte typically consists of: 1  Prothallus: A green, photosynthetic structure that is one cell thick, usually heart or kidney shaped, 3–10 mm long and 2–8 mm broad.
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How to Grow Lacecap Hydrangea 3. Feed lacecap hydrangea in March, May and July using a 12-4-8, 16-4-8 or 10-10-10 formula of general fertilizer. Provide divided applications and use 1 pound of fertilizer per 100 square feet. The soil pH plays a role in the color of pink and blue lacecap hydrangeas, so use a 10-10-10 fertilizer for blue blooms.Blue flowers occur at a lower pH, from 5.0 to 5.5, while pink flower occur at a higher pH, from 6.5-7.0.ith proper care the shrubs can grow up to 6 feet tall and wide and bloom from July through August in U.S. Department of Agriculture hardiness zones 6 though 9. They make excellent additions to the landscape as foundation plants, specimen plants, shrub borders and even ideal for seaside planting.
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- Introduction. Ferns are the largest group of seedless, vascular plants with over 10,000 species, the majority of which found in the tropics. They differ from fern allies by having large, complex megaphylls and by having photosynthetic gametophytes.
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- 1. Fern sporophyte plants have leaves called fronds, which grow from an underground stem called a rhizome. 2. Fern spores are produced in sori, which are usually on the underside of fronds. 3. A fern spore that lands in a favorable environment grows into a gametophyte plant called a prothallus.
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Co. Longford, Ireland It is Longford's most northerly town situated on high ground near the Mote of Granard, The Royal residence of Cairbre, eldest son of Niall the Great. In recent years its famous sons Eddie Macken, Brenden O'Reilly and Larry Cunningham have put Granard on the map.ituated on the main Longford Strokestown Road. It is where the Royal Canal flows into a cut stone harbor known as Richmond Harbour and links to the River Shannon. Drumlish, Druim Lis, Ridge or Long hill of the Forth. The Parish was founded here in 1822.
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cell 3. (Biology) biology the basic structural and functional unit of living organisms. It consists of a nucleus, containing the genetic material, surrounded by the cytoplasm in which are mitochondria, lysosomes, ribosomes, and other organelles. All cells are bounded by a cell membrane; plant cells have an outer cell wall in addition.
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Dr Ashu Gandhi Qualifications: MBBS, FRANZCP, MD (Psychiatry) Dr Ashu Gandhi is a sessional Consultant Psychiatrist at Delmont Private, with over 15 years psychiatric experience. His areas of expertise include mood disorders, psychosis and general adult psychiatry. His approach to understanding patient needs is sensitive, encouraging open and comprehensive consultations.
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Cristae Cristae. Definition. noun, singular: crista. (cell biology). The infoldings or inward projections of the inner membrane of the mitochondrion, which are studded with proteins and increase the surface area for chemical reactions to occur like cellular respiration.(anatomy).Crests or ridges projecting from a surface, as in cristae cutis (dermal ridges on palms and soles).he infoldings or inward projections of the inner membrane of the mitochondrion, which are studded with proteins and increase the surface area for chemical reactions to occur like cellular respiration. (anatomy).
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Mitochondrion The mitochondrion (plural mitochondria) is a double membrane-bound organelle found in all eukaryotic organisms. Some cells in some multicellular organisms may however lack them (for example, mature mammalian red blood cells).
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Biology book1 chloroplast. A small green cell organelle found in the leaves and some stems of plants. Chloroplasts are the sites of photosynthesis. They possess a stroma and contain four pigments: chlorophyll a, chlorophyll b, carotene, and xanthophyll.
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- (plural palingeneses). ( 1 biology) The apparent repetition, during the development of a single embryo, of changes that occurred previously in the evolution of its species. ( 2 Christian theology) Spiritual rebirth through the transmigration of the soul in Christian baptism.
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- The leaf of a fern. These are called fronds to distinguish them from the leaves of flowering plants. Leaves in flowering plants are purely concerned with photosynthesis whereas fern fronds have both a photosynthetic function and a reproductive function.
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Membrane noun, plural: membranes. (1) (biology) A thin layer of tissue covering a surface or lining a cavity, space or organ. (2) (biology) A cell membrane. (3) (chemistry) A thin pliable sheet of material that is permeable to substances in solution. A biological membrane functions by protecting the surface or bodily organ. It acts as a barrier against injurious substances. It also acts as a film or covering separating two regions. It may also connect structures or organs of an animal or a plant.
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Ferns Ferns grow best in moist, humid habitats with low light. They are very common in rainforests. Ferns have delicate leaves called fronds. They start out curled in a tight ball that opens as the frond grows. Ferns have horizontal stems called rhizomes.
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Fluorescence resonance energy transfer (FRET) microscopy imaging of live cell protein localizations Fluorescence resonance energy transfer (FRET) is a distance-dependent physical process by which energy is transferred nonradiatively from an excited molecular fluorophore (the donor) to another fluorophore (the acceptor) by means of intermolecular long-range dipole–dipole coupling.
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Frond Unfurling fiddlehead fern frond. A frond is a large, divided leaf. In both common usage and botanical nomenclature, the leaves of ferns are referred to as fronds and some botanists restrict the term to this group. Other botanists allow the term frond to also apply to the large leaves of cycads and palms (Arecaceae).
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LEAF (leaves) Noun. 1. frond-compound leaf of a fern or palm or cycad. foliage, leaf, leafage-the main organ of photosynthesis and transpiration in higher plants.
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Allantois Membrane, in biology, the thin layer that forms the outer boundary of a living cell or of an internal cell compartment. The outer boundary is the plasma membrane, and the compartments enclosed by internal membranes are called organelles.