Roses and tulips a. are variations of the same species b. reproduce using cones c. are nonvascular plants d. have cell walls and chloroplasts

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the cladogram shown here shows similarities and differences among several classes of vertebrates. anatomically, the four have limb structure as their common ancestor. we might separate the mammals from the other three classes because they a) divergent; do not lay eggs b) identical; are warm-blooded c) varied; a four chambered heart d) homologous; have mammary glands