激素浓度(mmol/L) | 平均T50(h) | |
赤霉素 | 脱落酸 | |
0 | 83 | 83 |
0.01 | 83 | 87 |
0.1 | 82 | 111 |
1.0 | 80 | 未萌发 |
2.5 | 67 | 未萌发 |
A.0.1mmol/L浓度时,赤霉素的作用不显著,脱落酸有显著抑制萌发作用 |
B.1.0mmol/L浓度时,赤霉素促进萌发,脱落酸将种子全部杀死 |
C.赤霉素仅改变T50,不改变最终发芽率 |
D.赤霉素促进萌发对种子是有益的,脱落酸抑制萌发对种子是有害的 |
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