The correct answer is B !! Both are interdependent thus forming a mutualistic association !!
As both can not live without each other thus making obligate !!
so They share obligate mutual association !! Go with B !!
B. Phylogeny. Phylogeny has a similar meaning to evolutionary being a synonym<span />
Protection and seed dispersal
For the answer to the question above,
<span>The only taxon in which the biological characteristics are clearly identifiable is the <em><u>"species".</u></em></span>
