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megasporangium
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megasporangium
Encyclopedia
理学
〔植物形态与结构〕
释
megasporangium
大孢子囊
孢子体进行无性生殖的结构。存在于部分石松类植物(Lycophytes)即水韭科(Isoetaceae)、卷柏科(Selageinellaceae),水生蕨类植物(Ferns)即蘋科(Marsileaceae)、槐叶蘋科(Salviniaceae),以及所有种子植物(spermatophytes)的成熟孢子体上。
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environmental emergency monitoring
environmental endocrine disruptors
Environmental Engineering
environmental engineering
Environmental Engineering Design
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Environmental Engineering of flight vehicle
environmental engineering of nonferrous metallurgy
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environmental epidemiology
environmental equilibrium
environmental ergonomics
environmental estrogens effect
environmental ethic
environmental ethics
environmental evolution
environmental exposure pollution
environmental externality
environmental factor
environmental factors in language acquisition
environmental factors of fish migration
environmental failure of welded structure
environmental failure of welding structure
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