Final answer:
There is blood where Dryope has cut flowers from the tree because it is a mortal under a spell. In Greek mythology, this signifies that the tree is an enchanted living creature, not just a plant.
Step-by-step explanation:
The reason there is blood where Dryope has cut flowers from the tree is because the tree is really a mortal (human being) under a spell. This scenario stems from a tale in Greek mythology where a nymph, or sometimes a mortal who has been transformed, is incarnated as a tree. In such stories, when someone unwittingly harms the tree, it bleeds, revealing that the tree is not just a plant but a living creature under enchantment. This theme of transformation and enchanted beings was common in ancient myths and speaks to the intertwined relationship between humans, gods, and nature.