definition of staminate cone
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- Definition of STAMINATE. 1. : having or producing stamens. 2. of a diclinous flower: having stamens but no pistils.
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- Cone biopsy: A cervical biopsy in which a cone-shaped wedge of tissue is removed from the cervix and examined under a microscope. Cone biopsy is performed after an abnormal Pap test, both to identify and to remove dangerous cells in the cervix.
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Conifer cone The male cone (microstrobilus or pollen cone) is structurally similar across all conifers, differing only in small ways (mostly in scale arrangement) from species to species. Extending out from a central axis are microsporophylls (modified leaves).he male cone (microstrobilus or pollen cone) is structurally similar across all conifers, differing only in small ways (mostly in scale arrangement) from species to species. Extending out from a central axis are microsporophylls (modified leaves).
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pore 1. stomate-a minute epidermal pore in a leaf or stem through which gases and water vapor can pass. stoma, pore. aperture-a natural opening in something. germ pore-a pore in the outer wall of a spore or pollen grain through which the germ tube or pollen tube makes its exit on germination.
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Stamen The stamen (plural stamina or stamens) is the pollen-producing reproductive organ of a flower.he stamens in a flower are collectively called the androecium. The androecium in various species of plants form a great variety of patterns, some of them highly complex. It surrounds the gynoecium and is surrounded by the perianth.
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Volume of a Cone Cones. A cone is a solid with a circular base. It has a curved surface which tapers (i.e. decreases in size) to a vertex at the top. The height of the cone is the perpendicular distance from the base to the vertex. A right cone is a cone in which the vertex is vertically above the center of the base. When the vertex of a cone is not vertically above the center of the base, it is called an oblique cone. The following diagrams show a right cone and an oblique cone. In common usage, cones are assumed to be right and circular.
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cone 4. Physiology One of the photoreceptors in the retina of the eye that is responsible for daylight and color vision. These photoreceptors are most densely concentrated in the fovea centralis, creating the area of greatest visual acuity. Also called cone cell.
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stamina Definition of stamina for English Language Learners. : great physical or mental strength that allows you to continue doing something for a long time.
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What is a Pine Cone? A pine cone is an organ of the pine tree containing its reproductive structures. Pine trees are only one of the conifer, or cone-bearing, plants; others include cedars, firs, cypresses, and redwoods. Pine cones, like the reproductive organs of other conifers, come in male and female varieties. In most species of pine, male and female cones grow on the same tree. The trees of some species have cones predominantly of only one sex, with a few of the opposite sex. Pinus is a genus of trees with about 115 species.
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Shared Flashcard Set cones are specialized reproductive structures of the sporophyte. Each cone consists of several “scales” arranged around an axis. Each scale is a sporophyll that will bear the spores of the sporophyte generation. An ovulate cone has many hard, radiating scales, each bearing a pair of ovules. Pollen cones are generally much smaller than ovulate cones; they contain many sporangia, each of which makes numerous haploid spores by meiosis. Male gametophytes (pollen grains) develop from the spores.
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Cinder Cone Volcano: Definition, Facts & Examples Definition. A cinder cone, also called a scoria cone, is a volcano composed of volcanic cinders (scoria), or small, rough particles of hardened lava.When lava that is highly charged with gas bubbles erupts from a vent under pressure, it tends to shoot straight up into the air.esson Summary. Cinder-cone volcanoes are volcanoes whose cones are composed of small, rough particles of solidified lava. The cone builds up over time from lava eruptions that shoot straight up, break apart, cool rapidly and fall near the vent they erupt from.
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- Cinder Cones. Cinder cones are steep conical hills of volcanic debris or tephra which accumulate from a volcanic vent both around and downwind. They are the most common form of volcanoes and are also referred to as scoria cones. Cinder cones vary in size from a few to hundreds of meters and most of them have a crater with a bowl shape at the summit.
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Stoma In botany, a stoma, also called a stomate, is a pore, found in the epidermis of leaves, stems, and other organs, that facilitates gas exchange. The pore is bordered by a pair of specialized parenchyma cells known as guard cells that are responsible for regulating the size of the stomatal opening. The term is usually used collectively to refer to the entire stomatal complex, consisting of the paired guard cells and the pore itself, which is referred to as the stomatal aperture. Air enters the pla
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Satellite glial cell Satellite glial cells are glial cells that cover the surface of nerve cell bodies in sensory, sympathetic and parasympathetic ganglia. Both satellite glial cells (SGCs) and Schwann cells (the cells that ensheathe some nerve fibers) are derived from the neural crest of the embryo during development.
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Conifer cone The male cone (microstrobilus or pollen cone) is structurally similar across all conifers, differing only in small ways (mostly in scale arrangement) from species to species. Extending out from a central axis are microsporophylls (modified leaves).he female cone (megastrobilus, seed cone, or ovulate cone) contains ovules which, when fertilized by pollen, become seeds. The female cone structure varies more markedly between the different conifer families, and is often crucial for the identification of many species of conifers.
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- Five Methods:Stamina through dietDeveloping physical staminaGiving your body adequate restDeveloping sexual staminaImproving mental staminaCommunity Q&A. Stamina is the strength and energy needed to exert oneself for an extended period of time. The word most commonly refers to the exertion needed for physical activities like exercise and sports. However, stamina can also refer to the mental exertion needed to perform a task or get through a difficult situation.
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Types of Volcanoes: Shield, Cinder Cones & Composite Cones Composite Cone Volcanoes. Composite cone volcanoes, which are also called 'stratovolcanoes' or simply 'composite volcanoes,' are cone-shaped volcanoes composed of layers of lava, ash and rock debris. Composite cone volcanoes are grand sites and can grow to heights of 8,000 feet or more.
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- secondary oocyte, an oocyte in the period between the first and second maturation division. It is derived from a primary oocyte shortly before ovulation by a division that splits off the first polar body. If fertilized, it divides into an ootid and the second polar body.Otherwise, it perishes.In humans, it is a round cell about 0.1 mm in diameter and consists of protoplasm that contains some yolk enclosed by a thin cell wall, the vitelline membrane. It is surrounded by the zona pellucida and corona radiata.f fertilized, it divides into an ootid and the second polar body. Otherwise, it perishes. In humans, it is a round cell about 0.1 mm in diameter and consists of protoplasm that contains some yolk enclosed by a thin cell wall, the vitelline membrane. It is surrounded by the zona pellucida and corona radiata.
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- Cinder Cones (also called Tephra Cones). 1  Cinder cones are small volume cones consisting predominantly of tephra that result from strombolian eruptions. 2  They usually consist of basaltic to andesitic material. 3  They are actually fall deposits that are built surrounding the eruptive vent.
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Understanding Diagnostic Injections: Selective Nerve Root Block (SNRB) 1-866-971-7940. A selective nerve root block is a diagnostic test performed to determine if a specific spinal nerve is the source of pain. A SNRB is performed to diagnose cervical (neck) or lumbar (low back) radiculopathy (irritation and inflammation of a nerve root). Using fluoroscopic guidance, steroid medication (a strong anti-inflammatory) is injected at a specific nerve root If the injection reduces symptoms, the pain source is identified. The test takes 15 to 30-minutes per spinal level.
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Conifer cone The female cone (megastrobilus, seed cone, or ovulate cone) contains ovules which, when fertilized by pollen, become seeds. The female cone structure varies more markedly between the different conifer families, and is often crucial for the identification of many species of conifers.ale cones of a pine A classic example of a Lebanese Cedar cone. Immature female pine cone Pollen cone of a Japanese Larch Pineapple gall on Sitka Spruce caused by Adelges abietis. Dozens of male cones (orange and flower-like) occur in a cluster; the female cone is still immature (olive green).
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Conifer cone A cone (in formal botanical usage: strobilus, plural strobili) is an organ on plants in the division Pinophyta (conifers) that contains the reproductive structures. pine cone covered in ice after an ice storm. Male cones of a pine A classic example of a Lebanese Cedar cone. Immature female pine cone Pollen cone of a Japanese Larch Pineapple gall on Sitka Spruce caused by Adelges abietis.
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Cinder Cone Volcano: Definition, Facts & Examples Definition. A cinder cone, also called a scoria cone, is a volcano composed of volcanic cinders (scoria), or small, rough particles of hardened lava. When lava that is highly charged with gas bubbles erupts from a vent under pressure, it tends to shoot straight up into the air.
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stamina Medical Definition of stamina. : the strength or vigor of bodily constitution : capacity for standing fatigue or resisting disease restoration of weight, strength and stamina following recovery from major surgery—Journal of the American Medical Association.
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Chapter 30 Study Qs Describe the pine cone in terms of structure and function. The female pine cone is a compact structure formed from a central axis with whorls of sporophylls (scales) attached. The sporophylls are scale-like structures with two ovules at the base of each. The scales are open when the female cone is young in order to accept pollen delivered by the wind. After pollination the scales of the female cone close. The cone develops and enlarges over the next year or two as the pollen tube grows through the micropyle towards the archegonium. After fertilization the female cone becomes even larger and woody. When the seeds are completely developed the pine cone opens up to release the seeds.
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Cinder cone Cinder cone. A cinder cone or scoria cone is a steep conical hill of loose pyroclastic fragments, such as either volcanic clinkers, cinders, volcanic ash, or scoria that has been built around a volcanic vent. They consist of loose pyroclastic debris formed by explosive eruptions or lava fountains from a single, typically cylindrical, vent.