Question

Cobalt chloride paper is used to demonstrate which of the following process?

• A. Roots, Leaves, Vessels
• B. Vessels, Leaves, Roots
• C. Leaves, Vessels, Roots
• D. Roots, Vessels, Leaves

Answer 1

The correct option is A

Roots, Leaves, Vessels

Cobalt chloride paper is used to demonstrate the process of transpiration. The dry blue coloured cobalt chloride paper turns pink in the presence of water. So during transpiration when water evaporates from the stomata the blue cobalt chloride paper turns pink. This proves that transpiration takes place in plants.