Question

french hydrangeas act like living indicators of soil Ph

give reason​

Answer 1

In a similar fashion, the color of many hydrangea blooms acts as a natural pH indicator for the soil in which the plant grows. Such blooms have blue sepals when the shrub grows in acidic soil, but develop red or pink sepals when grown in neutral to basic soils.

Answer 2

Answer:

we know that ph scale is the indicator that is used to specify the acidity or basicity of an aqueous solution.

In a similar fashion, the color of many hydrangea blooms acts as a natural pH indicator for the soil in which the plant grows. Such blooms have blue sepals when the shrub grows in acidic soil, but develop red or pink sepals when grown in neutral to basic soils.