roots

Xylem

...ll. Mechanism Xylem sap always moves from the roots to the leaves . It travels by bulk flow , like water in a series of pipes, rather than by diffusion through cells. Two phenomena cause xylem sap to flow: The soil solution (see soil ) is more dilute than the cytosol of the root cells. Thus, ...

Plant

...lants with full systems of leaves , stems , and roots . They also include a few of their close relatives, often called bryophytes , of which mosses are the most common. All of these plants have eukaryotic cells with cell walls composed of cellulose , and most obtain their energy through photos...

Plant

...lants with full systems of leaves , stems , and roots . They also include a few of their close relatives, often called bryophytes , of which mosses are the most common. All of these plants have eukaryotic cells with cell walls composed of cellulose , and most obtain their energy through photos...

Phylogenetic tree

... of rooted phylogenetic trees depicted so that the roots are all linked. Figure 2 depicts an unrooted phylogenetic tree¹ for myosin , a superfamily of proteins . Links to other pictures are given in the Pictures on the Web subsection below. There are three main methods of constructing phyloge...

Alga

...m cyanobacteria . All algae lack true leaves , roots , flowers , and other tissue structures found in higher plants. They are distinguished from bacteria and protozoa in that they are photoautotrophic . Thus, the algae are no longer considered a natural grouping, but the term is still used for co...

Phloem

...lly during the spring, storage organs such as the roots are sugar sources, and the plant's many growing areas are sugar sinks. The movement in phloem is bidirectional, wheras in xylem cells, it is unidirectional (upward). After the growth period, when the meristems are dormant, the leaves are sourc...

Joint

...he cranium . Gomphoses , the joints between the roots of the teeth and their sockets (or alveoli ) in maxilla and mandible . See also: condyloprotector , arthritis ....

Homunculus

...ve spasms before death fell to the ground, and its roots vaguley resemble a human form to varying degrees. ...is death. He seems to be a real homunculus, as his roots seem to be in the age of the alchemists. Very little is known about his past. However, he dresses da...

Herbivore

...ng animals also eat other parts of plants, notably roots and seeds . The diets of some herbivorous animals vary with the seasons, especially in the temperate zones , where different plant foods are most available at different times of year. Here is a list below that includes animals that are unable to ch...

Fungus

...ngi, called mycorrhizae , which assist their roots in absorption of nutrients and water . Contents showTocToggle("show","hide") 1 Human consumption 2 Structure 3 Reproduction 3.1 Sexual 3.2 Asexual 4 Nutrition and ecology 4.1 Pathogenic species 5 Taxonomy...

Endodermis

...ants, it is a thin layer of parenchyma found in roots , just outside the vascular cylinder. It regulates the flow of water. Endodermis is tightly packed together and contains Casparian strips on their radial walls which are made of suberin mainly, a waxy substance which prevents water from flowing bac...

Alga

...m cyanobacteria . All algae lack true leaves , roots , flowers , and other tissue structures found in higher plants. They are distinguished from bacteria and protozoa in that they are photoautotrophic . Thus, the algae are no longer considered a natural grouping, but the term is still used for co...