Fact 1: Plants respond to daily and seasonal cycles and to disease.

Fact 2: All plants are of bush type.

Given the two facts above, answer the question "what responds to daily and season cycles and diseases?" with the following options: 
- apples
 - potatoes
 - bushes
 - fens
 - bacteria
 - viruses
 - gravity
 - oak


 

   bushes      