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单词 sporangium
释义

Definition of sporangium in English:

sporangium

nounPlural sporangia spəˈran(d)ʒɪəmspəˈrændʒiəm
Botany
  • (in ferns and lower plants) a receptacle in which asexual spores are formed.

    Example sentencesExamples
    • None of these sporophyte plants produced fertile sporophylls bearing sporangia.
    • In each case, fragments of lamina were collected with mature but closed sporangia.
    • Thousands of sporangia were also collected on a moss covered decaying conifer log on a ground site at night with the use of a flashlight.
    • A parental fern grows, protects, and ultimately ejects its spores from a stalked structure: the sporangium.
    • The fungus can be identified microscopically by the production of its reproductive structures: the sporangiophores and sporangia.

Derivatives

  • sporangial

  • adjective
    Botany
    • However, sporangia are not always available for fossil ferns; and when present, determining sporangial type is often difficult.
      Example sentencesExamples
      • The genera are characterized by the sporangiophore and sporangial features and their relationship to and appearance of the rhizoid structures.
      • Figure 2 illustrates asexual sporangial structures seen with several of the common Mucoraceae.
      • The cone axis is not visible, but the sporangial clusters appear to be arranged spirally.
      • However, closer evaluation of sporangial shape shows clearly that there is more variation within the genus than was previously suspected.

Origin

Early 19th century: modern Latin, from Greek spora 'spore' + angeion 'vessel'.

 
 

Definition of sporangium in US English:

sporangium

nounspəˈranjēəmspəˈrændʒiəm
Botany
  • (in ferns and lower plants) a receptacle in which asexual spores are formed.

    Example sentencesExamples
    • In each case, fragments of lamina were collected with mature but closed sporangia.
    • Thousands of sporangia were also collected on a moss covered decaying conifer log on a ground site at night with the use of a flashlight.
    • The fungus can be identified microscopically by the production of its reproductive structures: the sporangiophores and sporangia.
    • A parental fern grows, protects, and ultimately ejects its spores from a stalked structure: the sporangium.
    • None of these sporophyte plants produced fertile sporophylls bearing sporangia.

Origin

Early 19th century: modern Latin, from Greek spora ‘spore’ + angeion ‘vessel’.

 
 
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更新时间:2025/1/31 11:07:41