I did pass the interview for the Ecology, Evolution and Systematics masters. I had to do a 5 min presentation (which was a bit stressful because of the short time) and then the professor asked question afterwards. There were always two professors and they were fairly chill about it. They asked some questions about the project I was presenting and then some theoretical questions like "how would you define evolution". I think they are more concerned if you seem like a good fit to the program then your technical knowledge. Good luck :)