Ineed with questions 62 and 64 and it’s very hard and i’m struggling with it and if you need to see the picture big then click on it and it will be big

According to the cladogram, which organisms have roundworms as a common ancestor?

Which is an advantage of having memory cells when a pathogen is encountered for a second time. a) the memory cells are what proliferate into clones of cells in response to the binding of an antigen. b) memory cells are vital to the primary immune response in that they immediately recognize pathogens even at the first encounter. c) memory cells are essentially effector cells that are short lived and attack antigens even without having a receptor specific to that antigen. d) it ensures that more lymphocytes with a receptor specific to a particular antigen will be present than in a host that had never encountered that pathogen.

What molecule contains an organisms genetic material, passed down from parents to their offspring