9. How do ferns reproduce?

3. The lignin in vascular plants is responsible for what plant characteristic?

15. Name this simple vascular plant that lacks true leaves and roots.

10. Which of the following is heterosporous?

2. The gametophyte in the life cycle of the club moss produces _____.

4. The last life cycle stage in the sporophyte (2n) generation of the fern is the ____.

6. Based on the uses of horsetails during pioneer days, the â tailâ of this dried plant can be best described as _____.

12. When looking under a microscope at a fern, what do you expect to find in the microsporangium?

A cell has a diameter of 5 micrometers (µm). Convert this measurement to nanometers (nm).

What is the central issue being discussed at the Council of Jerusalem?