Question

Some plants have blue flowers that turn pink when soil is treated with lime (a base). Which is most likely the cause for this characteristic?

(A) The genes that code for flower color are incompletely dominant.
B
The genes code for blue flowers, but they mutate to produce pink flowers.
C
The plant genes are influenced by the pH of the soil to produce two different colors.
The lime lowers the temperature of the soil, causing the genes that control flower color to be inactive.

Answer 1

The pH of the soil influences the flower color of plants. In acidic soil, blue pigments dominate, whereas in alkaline soil, pink pigments become more available.

Step-by-step explanation:

Some plants have blue flowers that turn pink when soil is treated with lime (a base) due to the influence of the pH of the soil on the plant genes. The pH of the soil affects the availability of certain pigments responsible for flower color. In acidic soil, the blue pigment dominates, resulting in blue flowers. However, when lime is added and the soil becomes more alkaline, the pink pigment becomes more available, leading to pink flowers.

Learn more about pH influence on flower color in plants