Fact 1: Roots grow in length and width from primary and secondary meristem.

Fact 2: Meristem growth occurs by the production of primordia which develop at the meristem periphery.

Given the two facts above, answer the question " the production of primordia cause roots to " with the following options: 
- Bend
 - grow
 - loss
 - expand
 - growth
 - Rise
 - mildew
 - die


 

  grow       