Fact 1: Roots grow in length and width from primary and secondary meristem. Fact 2: Primary growth results primarily from activity of the lateral meristems. Given the two facts above, what grow in length and width results primarily from activity of the lateral locations?

Select from:
[1]. cells
[2]. Trees
[3]. seeds
[4]. trunks
[5]. bushes
[6]. Roots
[7]. burrs
[8]. legumes
The answer is:
[6].