Hornworts have only one in each of their cells. A. membrane
B. ribosome
C. chloroplast

answer; /// i believe the correct answer is (thrombocytopenia); (a)

your answer is true

i am 100% sure

explanation:

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

so whats the answer