25 questions / Earth and Space (S.C.4.E.5.4) Rocks and Minerals (SC.4.E.6.2) Earth Structures (S.C.4.E.6.2) Heredity and Reproduction (SC.4.L.16.4) QND Plants (SC.3.L.14.1 Organization and Development of Living Things (SC.3.L.14.1). Plant structures and their purposes