A.种子的萌发受水分、温度和氧气等因素的影响 |
B.种子萌发过程中呼吸作用增强,储藏的有机物的量减少 |
C.干燥条件下种子不萌发,主要是因为种子中的酶因缺水而变性失活 |
D.种子子叶切片用苏丹Ⅲ染色后,显微镜下观察到橘黄色颗粒,说明该种子含有脂肪 |
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