Search Results for: sieve
Sieve tube
Definition noun, plural: sieve tubes (botany) Any of the tubes in the phloem comprised of cells joined end-to-end through... Read More
Sieve element
Definition noun (botany) A food-conducting cell in the phloem of vascular plants Supplement The phloem is the vascular... Read More
Sieve-tube element
Definition noun, plural: sieve tube elements A specialized type of sclerenchyma cell that forms a sieve tube of... Read More
Sieve cell
Definition noun, plural: sieve cells (botany) The main conductive cell in the phloem of the gymnosperms and... Read More
Sieve plate
Definition noun, plural: sieve plates The perforated transverse wall between two sieve elements in vascular plants... Read More
Companion cell
Definition noun (botany) Any of the metabolically-active parenchyma cells associated with a sieve tube element in the phloem... 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
Water in Plants
The movement of molecules, specifically water and any solutes, is vital to understand in light of plant processes. This will... Read More
Filtration
Filtration Definition What is filtration? Filtration is separating a solid from a fluid through a porous material that... Read More
Glycocalyx
What is the Glycocalyx? The glycocalyx is a polysaccharide-based gel-like, highly hydrous cellular thin layer, covering... Read More
Secondary phloem
Definition noun The type of phloem derived from the secondary meristems of a vascular plant Supplement The phloem is a... Read More
Phloem parenchyma
Definition noun The parenchyma cells in between the sieve tubes of the phloem, and functions primarily for food... Read More
Metaphloem
Definition noun, plural: metaphloems A component of the primary phloem that develops often following the differentiation of... Read More
Phloem sclerenchyma
Definition noun The sclerenchyma cells in the phloem of many vascular plants, and is responsible for providing mechanical... Read More
The consequences of antibiotic use in horticulture
Leading articles Frederick R. Falkiner* Department of Clinical Microbiology, Trinity College, Dublin; Central Pathology... Read More
Bast fiber
Definition noun (botany) The durable, nonliving sclerenchyma fiber in the phloem, providing support to the... Read More
Tracheophyte
Definition noun, plural: tracheophytes A vascular plant contains the conducting systems which consist of xylem for... Read More
Protophloem
Definition noun, plural: protophloems The first phloem to develop from the procambium Supplement The phloem is a vascular... Read More
Phloem fiber
Definition noun (botany) The elongated sclerenchyma cells in the phloem, and is responsible for providing tension strength... Read More
Primary phloem
Definition noun The type of phloem derived from the primary meristem during the development of a vascular... Read More
Vascular tissue
Definition noun, plural: vascular tissues (botany) A complex permanent tissue involved in the conduction of materials (e.g.... Read More
Ethmoid air cells
Definition noun The numerous tiny-walled, fluid-filled cells that lie in the ethmoid bone of the skull (i.e. specifically... Read More
Angiosperm
Angiosperms Definition What is an angiosperm? An angiosperm is a plant that produces flowers. The angiosperms, also... Read More
Plant Cell Defense
Hydrogen Peroxide Plants release hydrogen peroxide in response to the presence of a fungal invasion, which attacks by... Read More