teacher , how would I remember the functions and structure of different tissues in the plant body?

You need to understand the location and structure of the plant tissue first. Then you will be able to understand its function. If you try to study all of them in one day, it will be confusing for you. So study only the meristematic tissue one day. Next day revise this again, then turn to parenchyma tissue. Once you have understood this well, revise both of them again. Then turn to the collenchyma and sclerenchyma and so on. If you split up and study like this, you will be able to remember the details of each tissue easily. Remember to revise again and again.