(A) (D) Silique (fruit) Pet Cauline (stem)leaf\ Internode Rosette leaf Roots FIGURE 16.1 Arabidopsis thaliana. (A) Drawing of a mature Arabidopsis plant showing the various organs.(B) Drawing of a flower showing the floral organs.(C) An immature vegeta tive plant consisting of basal rosette leaves and a root system Figure 11-13 (not shown).(D)A mature plant after most of the flowers have matured and the siliques have developed. (A and B after Clark 2001: C and D courtesy of Caren Chang)Figure 11-13