1 / 7

What is next? Write your answers to these to begin your notes.

What is next? Write your answers to these to begin your notes. Think in terms of what we have seen so far in the evolution of land plants. 1. What has had to change in order to move away from water? 2. What do you think will happen next?. Ever been in one of these?.

mei
Download Presentation

What is next? Write your answers to these to begin your notes.

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. What is next? Write your answers to these to begin your notes. Think in terms of what we have seen so far in the evolution of land plants. 1. What has had to change in order to move away from water? 2. What do you think will happen next?

  2. Ever been in one of these? http://www.youtube.com/watch?v=UOrx6aFcEpU&feature=related http://www.youtube.com/watch?v=zKnrlUI85ys

  3. Gymnosperms There are four major classes Coniferophyta – largest remaining – pine trees Cycadophyta - Cycads – very similar to ferns. Ginkgophyta – One remaining species Gnetophyta – about 70 species.

  4. Ginkgo • Scientific name Ginkgo biloba • Considered a living fossil – species is about 270 million years old. • Thought to have been common in disturbed environments (succession)

  5. Gnetophyta • Ephedra – members of this genus make ephedrin • Welwitschiamirabelis (another single species) • Many woody climbing plants in tropics or sub tropics.

  6. Cycadophyta • Most are tropical or sub tropical unless moved here – indoor plants. • Very similar to ferns • Reproductive structure similar to cones. • Not Palm Trees.

  7. Coniferophyta • Should be much more familiar. • One of the dominant types of trees in the northwest. • What kinds of conifers can you name?

More Related