What is a phylogeny? (Points : 1)
an evolutionary history
an organism's appearance
a grouping of organisms
an outdated system of classification

Question

What is a phylogeny? (Points : 1)
       an evolutionary history
       an organism's appearance
       a grouping of organisms
       an outdated system of classification

anonymous · Answer

A phylogenetic tree or evolutionary tree is a branching diagram or "tree" showing the inferred evolutionary relationships among various biological species or other entities based upon similarities and differences in their physical and/or genetic characteristics.

So your best bet would be A - if you have any other questions, try being more specific about what's giving you trouble or tell us what you think should be the right answer.

agreene · Answer

"phylogeny n. , pl. , -nies . The evolutionary development and history of a species or higher taxonomic grouping of organisms."  
id go with A.