You are presented with the question "What is the name of the light cycle that plants detect?" and the following answer choices: 
- photons
 - three
 - Summer
 - diurnal
 - autumn
 - Energy.
 - Energy
 - sunlight

Now knowing that plants detect and respond to the daily cycle of light and darkness and diurnal cycles Diurnal cycles are the daily cycles of light and darkness, choose the best answer.


 

    diurnal     