Help needed suggestion

My half yearly exams are going to be started, I want to revise life processes, I had read this chapter like months ago and have forgot most of the things. Will samriddhi mam's this lecture would be enough?( I aim for full marks) 4hr lecture.

My half yearly exams are going to be started, I want to revise life processes, I had read this chapter like months ago and have forgot most of the things. Will samriddhi mam's this lecture would be enough?( I aim for full marks) 4hr lecture.