74 results found

Search Results for: apical

Apical bud

Apical Bud Definition The apical bud is the type of bud located at the top (apex) of the plant, particularly at the very... Read More

Apical meristem

Definition noun, plural: apical meristems (botany) A type of meristematic tissue that is located at the tips or terminal... Read More

Apical Dominance

a condition where vertical growth supercedes lateral growth in a plant. this is controlled by auxins, where in high... Read More

Apical complex

Definition noun An organ complex of the Apicomplexa that appears as a conical structures on the tapered end (or the apical... Read More

Intercalary meristem

The basic structural framework of plants is composed of different types of tissues. Based upon the capacity to divide, the... Read More

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

Tissue

Tissue Definition What is tissue in the body? The body tissue is an aggregation of cells that function together and have a... Read More

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

Apicomplexa

Definition noun A phylum comprised of protozoans characterized by having a special organelle called an apical complex, and... Read More

Plant Meristems and Growth

A common mistake that many people assume is that an increase in size means an increase in growth. This is not the case.... Read More

Glycocalyx

What is the Glycocalyx? The glycocalyx is a polysaccharide-based gel-like, highly hydrous cellular thin layer, covering... Read More

Roots

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

Ground meristem

Definition ''noun, plural: ground meristem (botany) The primary meristematic tissue from where the ground tissues (i.e.... Read More

Protist

Protist Definition What is a protist? All protists are eukaryotes, i.e. organisms with a nucleus. However, they are... Read More

Cytokinin

Plants require growth hormones for their regulated growth. Plant growth hormones or regulators (PGRs) are small organic... Read More

Turgor pressure

In biology, turgor pressure pertains to the pressure that is exerted by the fluid (e.g. water) against the cell wall. It is... Read More

Growth and Plant Hormones

Growth All living organisms begin in the same form: as a single cell. That cell will divide and the resulting cells will... Read More

Apocrine gland

The human body is a complex assemblage of many different organs, systems, glands, bones, and tissues. Weighing any one over... Read More

Cell membrane

Cell Membrane Definition Just like any non-living body possesses a plastic or paper packaging material that keeps the... Read More

Growth

Growth Definition What is growth in biology? Growth is the irreversible increase of an organism’s size over a given... Read More

Terminal web

Definition noun (cell biology) The subapical zone rich in microfilaments, and acts as the attachment point for the bundles... Read More

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

Protoderm

Definition noun, plural: protoderms (botany) The primary meristem from where the epidermis of the plant are... Read More

Procambium

Definition noun, plural: procambia (botany) The primary meristem where the primary vascular tissues develop... Read More

Primary meristem

Definition noun, plural: primary meristems (''botany') A type of meristem that is involved in the primary growth and thus... Read More

Merozoite

Definition noun, plural: merozoites A cell formed during the asexual division of the schizont; a stage in the life cycle of... Read More

Tight junction

What are tight junctions? Tight junctions are the intercellular barrier between two neighboring endothelial and epithelial... Read More

Primary xylem

Definition noun, plural: primary xylems The xylem formed during the primary growth from procambium of root and shoot... Read More

Chlorophyta

Chlorophyta Definition Chlorophyta is a taxonomic group (a phylum) comprised of green algae that live in marine habitats.... Read More

Dichotomous

Several English words are widely used across different fields of Science. One such term is dichotomous. We often use this... Read More

Pluripotent

Pluripotent Definition What is pluripotent? In biology, the term "pluripotent" means capable of developing into... Read More

Dominance

Definition noun (general) The state of being dominant; supremacy (genetics) The property of a gene (or allele) when it... Read More

Plant Auxins – Phototropism & Geotropism

As with animals, plants also use a variety of hormones to control their growth and development. A family of hormones called... Read More

Pith

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

Embryo

An embryo refers to the early developmental stage of a multicellular organism that follows fertilization. This stage... Read More

Trophozoite

Definition noun, plural: trophozoites The active, amoeboid cell form that occurs during the feeding stage in the life cycle... Read More

Root cap

root cap (Science: botany) A mass of parenchymtous cells which covers and protects the growing cells at the end of a root; a... Read More

Meristem

Definition noun, plural: meristems (''botany') An undifferentiated plant tissue that can give rise to different tissues and... Read More

Foveolar cell

Definition noun, plural: foveolar cells Any of the epithelial cells that line the surface of gastric mucosa and gastric... Read More

Oocyst

Definition noun, plural: oocysts A resistant, thick-walled spore containing the zygote Supplement Apicomplexa is a phylum... Read More