In previous episodes, Goa'uld symbiote blood is shown to have a bluish color. When the symbiotes are bitten, they do not emit any blood that is visible.
When Osiris is threatening Daniel with her dagger, the safety tip is visible.
When Jacob and Daniel meet O'Neill, all are walking on an obviously rural road (for automobiles or trucks). Since this is a Tok'ra planet, it would be impossible as they do not use such transportation.