The plants that didnt exist in the dinosaur times were: Roses, Sunflowers and all of the plants you see now didn't exist in the dinosaur times.
Dinosaurs existed. We're not too sure if dragons did. In other words, Dragons exist in the "mind" Dinosaurs exist in the museums. Dragons also exist in literature and in scuplture. Not all dinosaurs are extinct.
No!
by a meteor
No
in the era of awesomeness when dinosaurs were alive.
No.
no, but their ancestors did!
No
No. They are extinct.
Dinosaurs first appeared in the early Mesozoic.
Yes. Birds are descended from theropod dinosaurs.