A.图中①、②具有而⑤不具有的器官是花和果实 |
B.将图中所述的六种植物按照结构由简单到复杂的顺序排列:④→⑥→③→⑤→①→② |
C.①有两片子叶,其储存营养的结构是胚,②有一片子叶,其储存营养的结构是胚乳 |
D.⑥的叶只由一层细胞,它只能生活在阴湿环境中是因为它的根吸水力不强 |
同类型试题
y = sin x, x∈R, y∈[–1,1],周期为2π,函数图像以 x = (π/2) + kπ 为对称轴
y = arcsin x, x∈[–1,1], y∈[–π/2,π/2]
sin x = 0 ←→ arcsin x = 0
sin x = 1/2 ←→ arcsin x = π/6
sin x = √2/2 ←→ arcsin x = π/4
sin x = 1 ←→ arcsin x = π/2
y = sin x, x∈R, y∈[–1,1],周期为2π,函数图像以 x = (π/2) + kπ 为对称轴
y = arcsin x, x∈[–1,1], y∈[–π/2,π/2]
sin x = 0 ←→ arcsin x = 0
sin x = 1/2 ←→ arcsin x = π/6
sin x = √2/2 ←→ arcsin x = π/4
sin x = 1 ←→ arcsin x = π/2