Question

Vertical growth in plants takes place by?

Answer 1

The tissues in which the cells constantly divide are called meristematic tissues or meristems. They produce new cells. There are three types of meristems:

1. Apical
2. Lateral
3. Intercalary

Apical Meristems are present at the tip of the root and the shoot. This meristem is responsible for the increase in the length of roots and shoots, i.e. the vertical growth. The vertical growth is also referred to as primary growth. 
The Lateral Meristems are responsible for the horizontal growth.
To summarise, the Apical meristem is responsible for the vertical growth.

Answer 2

Answer:

The most growthhappens in the apical meristem. Apical meristem is found at the apices, or tips of the plant, both the tip of the shoot and the root, and is a region of actively dividing cells.