Fact 1: Roots have primary and secondary meristems for growth in length and width.

Fact 2: Meristems are zones of intense activity.

Given the two facts above, answer the question "Where does intense activity occur in a plant?" with the following options: 
- Roots
 - Buds
 - bamboo
 - fields
 - Summer
 - years
 - Hairs
 - Petals


 

 Roots        