Question

What are the significance of secondary growth in plants?

Answer 1

secondary growth makes a plant grow wider.
secondary growth occurs in the lateral meristems, which are found in the tree's trunk and branches.
secondary growth allows trees to live longer.

Answer 2

The significance of secondary growth is related to increase in thickness of the plant whereas in a plant the growth in the length of shoot and root is called "primary growth".

Secondary growth mainly occurs due to "cell division in the lateral meristem". The major significance of secondary growth is the outward growth of the plant that makes it thicker and wider.

It is important for woody plants as they grow much larger when compared to other plants and it also needs more support in their other parts.