在生物学课程中,我们学过许多概念,不同的概念间常有直接或间接的联系,用一些关联词把一些相关的概念联

2025-04-01 04:03:57
推荐回答(1个)
回答1:

(1)生物学家根据植物的形态结构,将植物分为种子植物、藻类植物、苔藓植物、蕨类植物四大类.因此图中A表示的植物类群是苔藓植物; 种子由种皮和胚组成,胚包括胚根、胚芽、胚轴和子叶四部分构.因此成数字①表示的结构是种皮,数字②表示的结构是子叶.苔藓植物没有真正的根.被子植物的种子有果皮包被,而裸子植物的种子没有.
(2)数字②表示的结构是子叶,大豆种子的子叶中贮存着丰富的营养物质.
(3)A、B、D都属于我国一级保护植物,C女贞属于普通的绿化树种,不属于我国一级保护植物.
故答案为:(1)苔藓植物  种皮  根  果皮  花生等;
(2)子叶                  
(3)C

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