hornwort

English - Turkish

Definition of hornwort in English Turkish dictionary: Boynuz otları; (Botanik, Bitkibilim) boynuzotu

English - English

Definition of hornwort in English English dictionary: A bryophyte with a leafless thallus characterized by a dominant gametophyte stage of the life cycle and a sporophyte stage shaped like a horn; An aquatic plant (Ceratophyllum), with finely divided leaves; any aquatic plant of the genus Ceratophyllum; forms submerged masses in ponds and slow-flowing streams; liverworts with slender hornlike 2-valved capsules any aquatic plant of the genus Ceratophyllum; forms submerged masses in ponds and slow-flowing streams; {s} grew horns, horned, betrayed by one's partner, cheated on by one's husband or wife; liverworts with slender hornlike 2-valved capsules; Any member of four to six genera of creeping annual or perennial plants of the class Anthocerotopsida. Hornworts usually grow on damp soils or on rocks in tropical and warm temperate regions. The gametophyte typically is a flattened structure covered with small irregular lobes; the sporophyte forms a tapered cylinder (see alternation of generations). Rhizoids (rootlike structures) on the undersurface anchor the plant. Cavities in the gametophyte sometimes contain colonies of the cyanobacterium Nostoc (see cyanobacteria, nostoc). Hornworts have a region of continuous growth at the base of the sporophyte, and a large, irregular foot. The stalk that attaches the foot to the spore-bearing capsule in liverworts is absent in hornworts; {i} plant that grows in ponds and rivers from the Ceratophyllum family