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Roots in Biological Dictionary

Spinal nerve

... which is formed from the dorsal and ventral roots that come out of the spinal cord. The spinal ... to the nerve ... Compression of nerve roots or the meninges covering the spinal cord usually ... The spinal nerve roots can be damaged as they traverse the spinal ...

Secondary growth

... Lab- Secondary Growth in Root s ... Even the roots of herbaceous plants can have Secondary Growth . ... of cross sections for roots that show Secondary Growth . ... ... of secondary growth occurs when ... Tomato roots do exhibit secondary growth , however they do ...

Secondary root

... ... storage roots of sweet potato have secondary growth but ...... stem and root increases. ... Secondary roots branch from it. Xylem - arranged in bundles in a ... regard to ... Later lateral or secondary roots grow from this at an acute angle outwards and ......

Roots

... . Furthermore, a stem ... The roots are a Grammy award winning American hip hop ... and largest FREE genealogical community. ... roots -L Mailing List. Surname List Finder. Archives Search. Archives Browse ... Shop for roots bags at eBags and Buy with confidence - Free ...

Rhizome

... is usually found underground, often sending out roots and shoots from its nodes. Rhizomes may also be ... subterranean stem is absolutely different from roots ... Larger quote on Rhizome from Thousand ... horizontal plant stem with shoots above and roots below serving as a ... Get information, ...

Primary root

... Fine roots : Primary roots usually <2 mm diameter that have the function ... ... Only primary xylem is present in young roots , which differentiated into ... primary ...

Periderm

... Bark is the outermost layers of stems and roots of woody plants. Plants with bark include ... ( ) n. The outer layers of tissue of woody roots and stems, consisting of the cork cambium and ... The tough outer covering of the woody stems and roots of trees, ... Occasionally the word bark is ...

Pericardium

... (membrane) that surrounds the heart and the roots of the great blood vessels. pericardium n. ... serous fluid that encloses the heart and the roots of the aorta and other large blood ... fibroserous sac enclosing the heart and the roots of the great vessels, composed of external ...

Pericycle

... at Britannica. Assorted References anatomy of roots ( in root (plant); The vascular cylinder is ... primordia emerged ... proximity to lateral roots that emerged from the pericycle tissue ... Lateral roots initiate from internal cells of the pericycle ...

Nerve roots

... pressing on one of the sciatic nerve roots . ... Tarlov cysts information sheet compiled ... ... fluid that most often affect nerve roots in the sacrum, the group of ... When sacral ... ... sacral cyst eroding the sacrum the nerve roots (shown with a green dot) were ... ... two ...

Geotropism

... was one of the first Europeans to document that roots show positive gravitropism and stems show ... . Endodermis. Prop. STUDY QUESTIONS. UNIT 10: roots ... (1) root cap - sloughed off, geotropism ... is a plant's reaction to gravity in which the roots go towards the ... ... branches diverge (er, ...

Clogging

... Clogging is a type of folk dance with roots in traditional European dancing from the British ... an authentic and distinctive ... Clogging has roots that reach back to our Scots-Irish and European ... is an percussive folk dance whose American roots are buried deep in the ... ...

Adventitious roots

... after birth. This article discusses adventitious roots , buds and shoots, which are very common in ... at ... This article discusses adventitious roots , buds and shoots, which are very ... ... or its Most commonly, adventitious roots arise out of stems, originating via cell ... ...

Ventral root

... . The formation of the spinal nerve from the dorsal and ventral roots ... Dorsal ( Root , Ganglion, Ramus) · Ventral ( Root , Ramus) ... and vary ... The root cells contribute their axons to the ventral roots of the spinal nerves ... Ventral root -cut preparations ... ...

Rhizosphere

... Disambiguation pages ... The Rhizosphere is the zone surrounding the roots of plants in which complex ... The differential uptake of these ions can ... ) ( geology ) The soil region subject to the influence of plant roots and characterized by a zone of increased Rhizosphere (ecology) An ...

Rhizoid

... rhizoid any of various slender filaments that function as roots in mosses and ferns and fungi etc ... What is the difference between ... ... rhizoid - any of various slender filaments that function as roots in mosses and ... Rhizoid - Definition of Rhizoid at ...

Mycorrhizae

... ... Mycorrhizae are symbiotic associations that form between the roots of most plant ... By this mechanism, mycorrhizae increase the ... absorbing organs (roots, rhizomes, or thalli ) of most Non-woody roots that are infected by beneficial fungi are called mycorrhizae . ...

Monocot

... from the Merriam-Webster Online DictionaryDefinition of ... Monocot roots are like dicot roots in that they contain pericycle, endododermis ... Brief and ...

Gravitropism

... gravity. Charles Darwin was one of the first Europeans to document that roots show positive gravitropism and stems show ... ... " is a Botany term that designates growth in response to gravity. roots have positive gravitropism because they grow in the same direction of ......

Cork cambium

... is responsible for secondary growth that replaces the epidermis in roots and stems. It is found in woody and many herbaceous dicots, ... Bark is the outermost layers of stems and roots of woody plants. Plants with bark include trees, woody vines and ....

Bark

... Bark is the outermost layers of stems and roots of woody plants. Plants with bark include trees, woody vines and ... clucks. ... Bark , hard covering or rind of the stem, branches, and roots of a tree or other ... Bark - Wikipedia, the free encyclopedia ... ...

Apical meristem

... in the following places at Britannica. root anatomy ( in root (plant) ) roots grow in length only from their ends. The very tip of the root is covered ... ... Cabbage: An Enlarged Shoot Apical Meristem . Both stems and roots grow typically from their tips. ... The leaves of the cabbage arch over ...

Xylem

... custom basses Xylem can create your dream guitar. In leaves, flowers, and young stems, xylem is present in conjunction with PHLOEM, ... In roots there is a central core of xylem (see ROOT, ... Information about xylem in the free online English dictionary and encyclopedia. ... Xylem ...

Upper epidermis

... The epidermis is a single-layered group of cells that covers plants leaves, flowers, roots and stems. It forms a boundary between the plant and the external world. The epidermis serves several functions, it protects ... ...

Thallus

... games. Information about thallus in the free online English dictionary and encyclopedia. ... thallus - a plant body without true stems or roots or leaves or vascular system; ... Compare Cheap Prices for Thallus at NexTag.com. Find Great Bargains on Sporting Goods, Toys, Collectibles, ...

Telomerase

... telomerase . ... Telomeres are controlled by the presence of the enzyme telomerase . ... Modern interest in telomeres and telomerase has its roots in experiments carried ... In Search of Telomerase . The telomerase enzyme that is the object of so ... Telomerase activation (TA-65)is a ...

Taxonomy

... Taxonomy is the practice and science of classification. The word finds its roots in the Greek τάξις, taxis and νόμος, nomos . Taxonomy uses taxonomic units, known as taxa . Biological classification or scientific ...

Symbiosis

... "a living together," from symbioun "live together, ... Article by M. Halit Umar on the cooperative arrangements between various fungi and the roots of green plants, with photomicrographs showing the processes involved. Industrial symbiosis is part of a new field called industrial ecology. .....

Subsidiary cells

... The epidermis is a single-layered group of cells that covers plants leaves, flowers, roots and stems. It forms a boundary between the plant and the external world. The epidermis serves several functions, it protects ... ... ...

Suberin

... waxy waterproof substance present in the cell walls of cork tissue in plants. ... What Suberin lamellae such as those found in some older roots ... Definition of suberin from the Merriam-Webster Online Dictionary with audio pronunciations, thesaurus, Word of the Day, and word games. ...

Stolon

... ground and are produced by many ... stolon n. Botany. A shoot that bends to the ground or that grows horizontally above the ground and produces roots and shoots at the nodes Definition of stolon from the Merriam-Webster Online Dictionary with audio pronunciations, thesaurus, Word of the Day, ...

Spinal cord

... itself has "neurological" segmental levels which ... 1. Spinal cord and vertebral ... Spinal cord segmental levels are defined by their roots but ... The main function of the spinal cord is transmission of ... The human spinal cord extends from the medulla oblongata and ...

Secondary phloem

... formed layers of conducting sieve elements ... in the upper side of secondary phloem were longer and wider and possessed a very ... ... roots of plants with secondary growth, primary phloem is very short-lived and, ... In secondary phloem they are usually aggregated and variously ...

Sciatic nerve

... the back of the leg to the toes. Symptoms and causes of sciatic pain in the sciatic nerve The sciatic nerve is formed by the nerve roots coming out of the spinal cord ... Branches of the sciatic nerve extend through the buttocks and down the back of ... sciatic nerve is ...

Root cap

... encyclopedia. ... root cap - thimble-shaped mass of cells covering and protecting the ... Root caps (RC) are the terminal tissue of roots of most plants (Barlow 2003). The root cap is divided between the apical part (Columella) and the lateral part ... Definition of root ...

Probability

... with ... Probability theory is the branch of mathematics concerned with analysis of ... The mathematical theory of probability has its roots in attempts to analyze ... Probability . Activities. Unders and Overs. You can't accumulate unless you ... Probability is a wonderful subject ...

Primary growth

... of the shoot is concentrated at the shoot tip. ... active in regions of the plant body that have completed the primary growth phase. ... roots grow both in length ( primary ) and in thickness (secondary) and can spread great distances both horizontally and vertically. ... economic growth ...

Pith

... in vascular plants. It consists of soft, spongy parenchyma cells, and is located in the center of the stem in eudicots and in the center of the roots in monocots. It is encircled by a ring of xylem (woody tissue), and outside that, ... The pith helmet is a lightweight helmet made of cork ...

Phototropism

... Quickly. ... The Mechanism of Phototropism . The Darwin Experiments. Boysen ... Light = phototropism . Stems are positively phototropic. roots are ... Phototropism ... Phototropism - the directional curvature of organs in response to lateral ... In nature stem phototropism ...

Nodule

... Nodule (medicine), a small aggregation of cells. Nodule (dermatology), a ... Root nodule , an outgrowth formed on the roots of legumes that house symbiotic ... A vocal cord nodule is a mass of tissue that grows on the vocal folds (vocal cords). Typically this mass ...
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