Land plants solved this problem by developing roots as well as stems and leaves, and a system of vessels (xylem and phloem) to connect them. All four of the land plant groups have these features (except mosses do not have vessels).e will not go into the details of this, other than to state the two generations are called the gametophyte (produces gametes) and the sporophyte (produces spores) generations. We need to mention these because the four plant groups each have unique alternation of generations.
Summary: 1.When family medical practitioners deal with the comprehensive health of all individuals, internal medicine practitioners specialize in some category. 2.Internal medicine involves specialty treatment. It involves the diagnosis and treatment of serious diseases of a particular organ. 3.Family medicine is a division of the primary care that deals with the overall health of a family or individuals of all ages and sexes.
1 General practitioners treat a wide range of medical problems in people of all ages. 2  Family practitioners are similar to general practitioners, but have extra training to care for all family members, young or old. 3  Internists are doctors for adults.