Chapter 23, Problem 14TYU

Test Your Understanding

Evaluate and Synthesize

14. VISUALIZE construct a cladogram based on the following data. Mosses are plants with no vascular tissue. Horse-tails, ferns, gymnosperms (pines and other plants with naked seeds), and angiosperms (flowering plants) are all vascular plants. Seeds are absent in all but the gymnosperms and angiosperms. Angiosperms are the only seed plants with flowers. (Hint: To help you construct the cladogram, draw a simple table showing which characters are present in each group. See Fig. 23-9.)

Figure 23-9 Constructing a cladogram using outgroup analysis