A short non-vascular plant evolved into a tall plant with an efficient water conducting system 420 million years ago. Which of the following statements about the later form of this plant do you believe is correct?

• A. It would show a possible decrease in spore dispersion distances.
• B. Number of archegonia will increase.
• C. It would not have true roots, stems, or leaves.
• D. Tube-like structures for circulating water would have appeared.

Answer: (D)