http://www.windows.ucar.edu/tour/link=/mythology/greek_family_tree.html
Yes. If you search on Google images titled "Greek mythology family tree" you will see the family tree.
Father: Cephissus (river god) Mother: Liriope (nymph)
daphne
Click link below, to see the Family tree of the Greek gods! The ones in green and the ones above that level are the elder gods.
I think you would need to manually create something like that.
In Poptropica's Mythology Island, the apple tree is located in the Garden of the Gods. You can find it near the entrance to the area where you meet various Greek gods. To obtain the golden apples, you need to interact with the tree after completing certain tasks in the questline.
Ladon the Dragon
None. There is no Greek goddess Ianus.
Must depend on where you have seen the family tree. For example in Wikipedia: Family tree of the Greek gods she is listed as daughter of Uranus.
Are's sacred tree was the oak tree. It was associated with Zeus and was often used as a symbol of wisdom, strength, and resilience in Greek mythology.
Hydros.
Why don't you just do it by hand...