Final answer:
The presence of glossopteris in Antarctica suggests that it was once connected to other landmasses and supports the theory of plate tectonics.
Step-by-step explanation:
The presence of glossopteris in Antarctica suggests that Antarctica was once connected to other landmasses that also had glossopteris fossils, such as South America, Africa, India, Australia, and New Zealand. These fossils indicate that these landmasses were once part of a supercontinent called Gondwana, which began to break apart around 180 million years ago. The distribution of glossopteris fossils provides evidence for continental drift and supports the theory of plate tectonics.