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Nervous System

THE is the most complicated and highly organized of the various systems which make up the human body. It is the... Read More

Tutorial

Stems

External Form of a Woody Twig A woody twig, or stem, is an axis with leaves attached. The leaves are arranged in various... Read More

Tutorial

Roots

Upon seed germination, the embryo root, called the radicle, grows and develops into the first root. The radicle may thicken... Read More

Definition

Roller

roller 1. One who, or that which, rolls; especially, a cylinder, sometimes grooved, of wood, stone, metal, etc, used in... Read More

Definition

Pith

Pith Definition In general, the term "pith" refers to the "soft inner portion" of something. In botany, a pith refers... Read More

Tutorial

Plant Tissues

Plants are composed of three major organ groups: roots, stems, and leaves. As we know from other areas of biology, these... Read More

Definition

Strangler

Definition noun, plural: stranglers (botany) A hemiepiphyte or epiphyte that grows when seed germinates at the canopy of the... Read More

Article

Prop root anatomy of Philodendron bipinnatifidum Schott (Araceae)

Prop root anatomy of Philodendron bipinnatifidum Schott (Araceae) VIANNA, Wânia de Oliveira, SOARES, Marli Kasue Misaki... Read More

Definition

Capsid

Capsid Definition A capsid is a three-dimensional proteinaceous capsular shell around a virus that encloses the viral... Read More

Definition

Exhaust

Exhaust 1. Drained; exhausted; having expended or lost its energy. 2. Pertaining to steam, air, gas, etc, that is released... Read More

Definition

Absorption

Absorption can be defined as the process of assimilating substances across the intestinal epithelial cells or the tissues... Read More

Tutorial

Vascular Plants: Ferns and Relatives

These plants are seedless plants, but unlike the bryophytes, they do have vascular tissue (xylem and phloem). Because of the... Read More

Definition

Shaft

shaft 1. The slender, smooth stem of an arrow; hence, an arrow. His sleep, his meat, his drink, is him bereft, That lean he... Read More

Definition

Rib

Rib 1. (Science: anatomy) One of the curved bones attached to the vertebral column and supporting the lateral walls of the... Read More

Definition

Xylem

Xylem Definition Xylem is defined as a plant tissue that transfers water and nutrients from roots to all over the plant... Read More

Definition

Balete

Definition noun (botany) A plant species of the genus Ficus of the family Moraceae, and is endemic in the... Read More

Definition

Face

Face 1. The exterior form or appearance of anything; that part which presents itself to the view; especially, the front or... Read More

Definition

Nucleosome

Nucleosome Definition Every organism is made of deoxyribonucleic acid, also known as DNA. DNA is made up of numerous... Read More

Definition

Peristalsis

What is Peristalsis? Peristalsis is the series of involuntary, wave-like muscle movements in the cylindrical, hollow tube... Read More

Definition

Rotary joint

Definition noun, plural: rotary joints A synovial joint in which a section of a cylinder of one bone fits into a... Read More

Definition

Articulatio trochoidea

Definition noun Latin for trochoid articulation, a synovial joint in which a section of a cylinder of one bone fits into a... Read More

Definition

Cloning

Cloning Definition In biology, cloning is the process of producing similar populations of genetically identical individuals... Read More

Definition

Hydra

Hydra (Science: organism) genus of freshwater coelenterates (cnidarians). They are small, solitary and only exist in the... Read More

Definition

Pair

Pair 1. To be joined in paris; to couple; to mate, as for breeding. 2. To suit; to fit, as a counterpart. My heart was made... Read More

Definition

Pump

pump An hydraulic machine, variously constructed, for raising or transferring fluids, consisting essentially of a moving... Read More

Definition

Sponge

Sponge 1. (Science: zoology) Any one of numerous species of spongiae, or porifera. 2. The elastic fibrous skeleton of many... Read More

Definition

Centriole

Definition noun, plural: centrioles A self-replicating, small, fibrous, cylindrical-shaped organelle, typically located in... Read More

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