Breifly describe the cohesion-tension theory in plants?

  1. Water evaporates from the cells and leaves the plant once the stomata open,

  2. This creates a suction which pulls more water into the leaf

  3. As water is cohesive due to hydrogen bonds, when one molecule moves other tend to follow, the whole column of the xylem moves upwards

  4. Water enters through the roots

BQ

Related Biology A Level answers

All answers ▸

Describe Protein Synthesis


How does a point mutation in the gene coding for ATP synthase affect oxidative phosphorylation


What is the role of the kidneys and how does it function to do its job?


The surface run-off of nitrate from agricultural fertiliser into freshwater ponds and lakes can cause the death of the fish. Explain how this happens.