Can someone help me describe the primary growth in a perennial plant?

We don’t generally do people’s homework for them, but no one minds helping you figure things out. Do you know what “primary growth” means? Can you differentiate between a perennial and an annual? What are the cell types?

Primary growth is the lengthening of the stem and roots
Perennial plant is a plant that lives for more than two years.
Annual plant is a plant that usually germinates, flowers, and dies in a year or season.

That’s all I really have so far.

@hawaiian4life13, welcome to fluther.

So, you have a pretty good start. Do you have your textbook with you? You should be able to find what you need in the index. If not, you can start on line with Wikipedia and see if there is an article on growth in perennials.

I recommend the book Botany for Gardeners You do not have to be a gardener to use or appreciate the book. It is fairly short, but covers a lot of ground in an easily understandable way.