Are the protists a monophyletic group? please discuss this anddescribe this by drawing a “tree†that would include the diatoms,dinoflagellates, red algae, brown algae, green algae andcharophytes. what are the main characteristics of these differentgroups, i.e., which of these groups have silica in its cell walls?Which has both chlorophyll a and b,which of these is considered inthe plantae group but NOT a green plant, etc.?