What cell structure would a leaf or a tree have that a fingernail wouldn't a. mitochondria b. cilia c. chloroplasts d. ribosomes

B chloroplasts. Because cilia is something found in both of the cells, an same goes for mitochondria and ribosomes.

it is going to be B

endo:

regulates body hormones, aldosterone, vasopressin

neural:

signal, regulates body using electric signals, reflex

endo has to do with hormones; aldosterone and vasopressin are both hormones. i also had this question and got it right : d