prothallus中文，prothallus的意思，prothallus翻译及用法

2026-03-22 04:16 浏览次数 23

prothallus

英[prəʊ'θæləs]美[prə'θæləs]

[植] 原叶体

prothallus 英语释义

英语释义

    1. the gametophyte of a pteridophyte (such as a fern) that is typically a small flat green thallus attached to the soil by rhizoids

    2. a greatly reduced structure of a seed plant corresponding to the pteridophyte prothallus

prothallus 例句

英汉例句

  • In homosporous plants, there is only one type of prothallus with both male and female sex organs.

    在具同形孢子的植物中，只有一种雌雄性器官兼备的原叶体类型。

  • true prothallus of ferns are mostly heart-shaped, green self-supporting, while others showed filamentous or ribbon.

    真蕨类的原叶体多为心形，绿色自养，也有的呈丝状或带状。

  • Equisetum class prothallus of cushion-like, with upright branches of the ribbon, green self-supporting;

    木贼类的原叶体为垫状，具直立的带状分枝，绿色自养；

  • Archegonial neck usually inclines or curves towards the base of the prothallus at maturity.

    颈卵器成熟后，颈部常向原叶体基部倾斜或弯曲。

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