蔷薇科分为哪四个亚科?并简述它们的区别? -题库考试答案搜索网

蔷薇科分为哪四个亚科?并简述它们的区别?

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2022-04-02 21:38

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正确答案

绣线菊亚科,蔷薇亚科,苹果亚科,李亚科。
绣线菊亚科叶多为单叶稀复叶,无托叶,稀有托叶;花离心皮雌蕊,子房上位;果多为聚合蓇葖果,少为蒴果;蔷薇亚科叶多为复叶,互生有托叶;花离心皮雌蕊,子房上位,生于隆起呈头状的花托上或生于凹下呈袋状或壶状的花托内;果为瘦果或核果;苹果亚科叶多为单叶,少复叶,互生有托叶;花复雌蕊,子房下位或周位,花托参与果实形成;果为梨果;;李亚科叶为单叶有托叶,互生;花为单雌蕊,子房上位;果为核果。

试题解析

标签：东北林业大学林学专升本树木学平时作业1

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