root in Biological Definition

Taxonomy

... of this structure is a single classification, the root node, that applies to all objects. Nodes below this root are more specific classifications that apply to ... 's Scientific classification of organisms, the root is the Organism (as this applies to all living ...

Xylem

... xylem is the tissue that carries water up the root and stem. In trees , it constitutes wood ; the ... soil ) is more dilute than the cytosol of the root cells. Thus, water moves osmotically into the cells, creating root pressure . Even under optimal ...

Arabidopsis

... organism has led to discoveries such as positive phototropic responses of root cells to red, far red and infrared light. While gravitropic response of Arabidopsis root organs is the predominant tropic effect in these organs, specimens treated ...

Bacterium

... microbes, which reside in the rhizosphere (a zone that includes the root surface and the soil that adheres to the root after gentle shaking). Some bacteria are able to use molecular nitrogen ...

Bacterium

... microbes, which reside in the rhizosphere (a zone that includes the root surface and the soil that adheres to the root after gentle shaking). Some bacteria are able to use molecular nitrogen ...

Glucose

... This is easy to remember, as the D is for "dextro," which is a Latin root for "right," where as L is for "levo" which comes from the Latin root for "left." The ring structure itself may form in two additionally ...

Embryo

... . Plants : In botany , a plant embryo is part of a seed , consisting of precursor tissues for the leaves, stem (see hypocotyl ), and root (see radicle ), as well as one or more cotyledons . Once the embryo begins to germinate — grow out from the seed — it is called a ...

Eukaryote

... lines, and the relationships between the different supergroups remain almost entirely uncertain. In particular, there is dispute about where the root of the evolutionary tree belongs, and as a result what the earliest eukaryotes were like. References S. L. Baldauf (2003). The Deep Roots ...

Fungus

... Pathogenic species Fungal diseases include: brown rot chestnut blight ergot fusarium powdery mildew Texas root rot vegetable caterpillar Fungal infections may also be a factor in causing specific replant disease . In general, humans have a ...

Homunculus

... by hanged men during the last convulsive spasms before death fell to the ground, and its roots vaguley resemble a human form to varying degrees. The root was to be picked before dawn on a Friday morning by a black dog, then washed and "fed" with milk and honey and, in some prescriptions, blood, ...

Interphase

... . Cells during interphase may or may not be growing. At any given time, even in an area of rapid cell division such as the tip of a plant root , 90 per cent of cells are in interphase. Some cells, such as nerve cells, can stay in interphase for decades. The cell grows and replicates its ...

Varicella zoster virus

... . Even when clinical symptoms of varicella have resolved, VZV remains dormant in the nervous system of the host in the trigeminal and dorsal root ganglia . In about 10-20% of cases, VZV later reactivates later in life to produce herpes zoster (shingles) and its associated sequelae ...