Correct Answer: Option D

Explanation

The amount of water loss from a leaf (transpiration) can be detected using blue cobalt chloride paper because this paper is chemically sensitive to moisture. 

When dry, cobalt chloride paper is blue. Upon coming into contact with water or water vapor released by the leaf, it undergoes a chemical change and turns pink. By measuring the time it takes for the paper to change from blue to pink, researchers can determine the rate and relative amount of water loss from different surfaces of the leaf.

• what is the fluid in the eye calles? Answer this

  1 Answers   ·   Biological Science   ·   32 minutes ago
• which school is the richest school in Nigeria? Answer this

  1 Answers   ·   23 hours ago
• how does post utme looks like and what are the subjects required for a medical student? Answer this

  1 Answers   ·   22 hours ago