Describe what is meant by photoperiodism
A response controlled by relative light and dark periods. The name of the receptors responsible for absorbing light are phytochromes. The photoperiodic stimulus is detected by the leaves of the plant.
AO
Related Biology A Level answers
All answers ▸What are competitive and non-competitve inhibitors?
Messenger RNA (mRNA) is used during translation to form polypeptides. Describe how mRNA is produced in the nucleus of the cell. (6 marks)
What is speciation?
Why do mutations makes it difficult to create a vaccine ? (4 marks - has the potential to be worth more in an exam)