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 ▸Which mechanisms control the homeostasis of blood sugar levels in the human body? How do these regulate the concentration of sugar in the blood?
What is Darwin’s theory of Evolution by Natural Selection? What is the evidence?
Describe what happens when an action potential reaches an axon terminal.
Describe the steps involved in mitosis and name the exact stages (6)