Root systems are branched to help keep the plant in the soil. The tissues in roots are organized into several distinct structures. These structures have different functions. What are three ways that the function of a root is helped by its structure?​

answer; i believe the correct answer is ( proteins );

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