问题详情

According to the professor, what led scientists to characterize the Nightcap Oak as primitive？

A．It has no evolutionary connection to other trees growing in Australia today.

B．It has an inefficient reproductive system.

C．Its flowers are located at the bases of the leaves.

D．It is similar to some ancient fossils.

此题为多项选择题。请帮忙给出正确答案和分析，谢谢！