How would i study for a biology test tomorrow that i am struggling in? i am doing plants and cells unit and i want to pass this but its just so hard to understand everything, any way to study for this more efficiently?

One word. R͟e͟p͟e͟t͟i͟t͟i͟o͟n͟.

Study one small part at a time, over and over. Ask questions and stay after school. Do research and flash cards. All the help you need is there. You have to do your part and dedicate yourself into your class. There isnt a sufficient way to cram information in when you have a test next day, but next time you should do an little something helpful called, s͟t͟u͟d͟y͟i͟n͟g͟.