Give two examples of tissues that are different in a mature stem than they are in a young stem.

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

ok yes, but what is the question? as soon as you ask the actual question i will answer it. : )