Search Results for: companion cell
Companion cell
Definition noun (botany) Any of the metabolically-active parenchyma cells associated with a sieve tube element in the phloem... 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
Phloem parenchyma
Definition noun The parenchyma cells in between the sieve tubes of the phloem, and functions primarily for food... 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
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
Angiosperm
Angiosperms Definition What is an angiosperm? An angiosperm is a plant that produces flowers. The angiosperms, also... Read More
Bast fiber
Definition noun (botany) The durable, nonliving sclerenchyma fiber in the phloem, providing support to the... Read More
Phloem sclerenchyma
Definition noun The sclerenchyma cells in the phloem of many vascular plants, and is responsible for providing mechanical... Read More
Phloem fiber
Definition noun (botany) The elongated sclerenchyma cells in the phloem, and is responsible for providing tension strength... Read More
Seed Plants
There are two main subdivisions of seed plants—the ones without covered seeds, the gymnosperms, and the ones with covered... Read More
Protophloem
Definition noun, plural: protophloems The first phloem to develop from the procambium Supplement The phloem is 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
Parasitism
Organisms depend on different sources of food to survive. Larger organisms like plants make their own food (autotrophs) and... Read More
Imprinting
What does imprinting mean? Have you watched the TV cartoon show “Tom and Jerry” with an episode of a duck and its... Read More