A) gravitropism is how they "know"
All of these things would be considered homologous. Please mark Brainliest!!!
Dichotomous Keys are used to find out what type of animal,plant,fungi,prokaryote,eukaryote,or bacteria an organism is. A branching diagram is used to find what domain,kingdom,phylum,class,order,family,genus,species an organism belongs in.
I believe the answer is a