sporangium

spo·ran·gi·um

S0662700 (spə-răn′jē-əm)n. pl. spo·ran·gi·a (-jē-ə) A single-celled or many-celled structure in which spores are produced, especially in fungi, algae, mosses, and ferns. Also called spore case.

[New Latin sporangīum : spor(o)- + Greek angeion, vessel; see angio-.]

spo·ran′gi·al (-jē-əl) adj.

sporangium

(spəˈrændʒɪəm) n, pl -gia (-dʒɪə) (Biology) any organ, esp in fungi, in which asexual spores are produced[C19: from New Latin, from sporo- + Greek angeion receptacle] spoˈrangial adj

spo•ran•gi•um

(spəˈræn dʒi əm)

n., pl. -gi•a (-dʒi ə) the case or sac in which spores are produced. [1815–25; < New Latin, =spor- spor- + Greek angeîon vessel] spo•ran′gi•al, adj.

spo·ran·gi·um

(spə-răn′jē-əm) Plural sporangia A plant cell or structure in which spores are produced. Ferns, fungi, mosses, and algae release spores from sporangia.

sporangium

A structure in which spores are produced and stored.

Thesaurus

Noun

sporangium - organ containing or producing sporesspore case, spore sacreproductive structure - the parts of a plant involved in its reproductionmacrosporangium, megasporangium - a plant structure that produces megasporesmicrosporangium - a plant structure that produces microsporeseusporangium - a sporangium that arises from a group of epidermal cellsleptosporangium - a sporangium formed from a single epidermal cell; characteristic of the Filicales or of almost all modern fernstetrasporangium - a sporangium containing four asexual spores

Translations

Sporangium

sporangium

[spə′ran·jē·əm] (botany) A case in which asexual spores are formed and borne.

Sporangium

a plant organ in which spores are formed. A sporangium may be unicellular (in many lower plants) or multicellular (in higher plants). Certain unicellular green algae undergo complete transformation in the sporangium. In multicellular algae, such as Ulothrix and Ulva, cells indistinct from other cells may become sporangia; in Ectocarpus and Laminaría the sporangium is formed from cells that differ from all other cells and occupy a definite position on the thallus. In certain acellular plants sporangia are formed on the thallus by forming a septum. The sporangia of some oomycetes become conidia, fall off, and sprout. The names of sporangia in lower plants reflect the structural features of the spores that form in them (for example, zoo-sporangium), the number of spores (monosporangium, tetraspo-rangium), the external appearance of the sporangium (cysto-carp), or the method of spore formation (mitosporangium, meiosporangium). The succession of nuclear phases in plant cycles of development is associated with meiosporangia.

Higher plants form only meiosporangia. In bryophytes the sporangium is represented by the capsule of the sporogonium. The sporangia of ferns develop on sporophylls or in their axils. Sporangia may be solitary or in groups (sori) and may be free or con-cresced (synangia). Isosporous ferns form sporangia of a single type, which produce spores that germinate in bisexual prothallia. Heterosporous ferns produce sporangia of two types— microsporangia and megasporangia—which, in turn, form microspores and megaspores (from which male and female prothallia develop). All seed plants are heterosporous; the nucellus of their ovule is homologous to a megasporangium. The pollen cell in an-giosperms is homologous to a microsporangium.

REFERENCES

See references under .

A. N. SLADKOV

sporangium

spo·ran·gi·um

(spō-ran'jē-ŭm), A saclike structure (a cell) within a fungus, in which asexual spores are borne by progressive cleavage. [L. fr. G. sporos, seed, + angeion, vessel]

sporangium

(spə-răn′jē-əm)n. pl. sporan·gia (-jē-ə) A single-celled or many-celled structure in which spores are produced, especially in fungi, algae, mosses, and ferns. Also called spore case.

spo·ran′gi·al (-jē-əl) adj.

spo·ran·gi·um

(spōr-anj'ē-ŭm) A saclike structure (a cell) within a fungus, in which asexual spores are borne by progressive cleavage. [L. fr. G. sporos, seed, + angeion, vessel]

sporangium

(pl. sporangia) the structure within which asexual SPORES are formed.

sporangium

spo·ran·gi·um

sporangium

spo•ran•gi•um

spo·ran·gi·um

sporangium

Sporangium

sporangium

Sporangium

REFERENCES

sporangium

spo·ran·gi·um

sporangium

spo·ran·gi·um

sporangium

sporangium

Synonyms for sporangium

noun organ containing or producing spores

Synonyms

Related Words