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orthotropous ovule

n. a completely straight ovule with the micropyle at the apex

1、[植]直生胚珠

珠心和珠柄相愈合的部分直生胚珠(orthotropous ovule):指珠柄.珠心和珠孔的位置列于同一直线上,珠孔在珠柄相对的一端的一类胚珠倒生胚珠(anatropous ovule):指珠柄细长,整个胚珠做1...

生物学

n.a completely straight ovule with the micropyle at the apex

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