英语词汇“protonema”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

protonema

/ˌprəʊtə(ʊ)ˈniːmə/

Botany

noun

1The juvenile form of a bryophyte (usually consisting of a branched filamentous structure, but sometimes flat or platelike), developing on the germination of a spore and producing buds from which the adult plants arise.

2An analogous thread-like structure in other lower plants; specifically the filamentous form of a developing gametophyte of a fern or charophytic alga.

Origin

Mid 19th century; earliest use found in Miles Berkeley (1803–1889), Church of England clergyman and naturalist. From scientific Latin protonema, former genus name from proto- + -nema.

单词	protonema
释义	protonema /ˌprəʊtə(ʊ)ˈniːmə/ Botany noun 1The juvenile form of a bryophyte (usually consisting of a branched filamentous structure, but sometimes flat or platelike), developing on the germination of a spore and producing buds from which the adult plants arise. 2An analogous thread-like structure in other lower plants; specifically the filamentous form of a developing gametophyte of a fern or charophytic alga. Origin Mid 19th century; earliest use found in Miles Berkeley (1803–1889), Church of England clergyman and naturalist. From scientific Latin protonema, former genus name from proto- + -nema.
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