1 / 12

The Vascular Plants

The Vascular Plants. Tracheophytes By: AbubakerAlbach & Hamzah Mohammed. Introduction. Vascular Plants, otherwise known as Tracheophytes , are a large group of plants that first appeared on E arth around 360 million years ago

nodin
Télécharger la présentation

The Vascular Plants

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. The Vascular Plants Tracheophytes By: AbubakerAlbach&Hamzah Mohammed

  2. Introduction • Vascular Plants, otherwise known as Tracheophytes, are a large group of plants that first appeared on Earth around 360 million years ago • They include conducting tissues which allow for the transport of materials through the plant, these tissues are called xylem and phloem. • They include most of the modern day plants and can be split into two sub groups: Spore Producing and Seed Producing plants.

  3. Spore Producing Plants The lesser of the two sub groups in terms of numbers, spore producing plants used to be large in number millions of years ago however the numbers since then have lessened

  4. Spore Producing Plants • During the Carboniferous Period about 325 million years ago, Spore Producing plants were much more common. Today spore producing plants are made up primarily of club mosses, horsetails and ferns. • The club mosses and horsetail are descendants of a once thriving ancient plant, however they are now restricted to mostly growing in marshes and/or close to streams and rivers

  5. Spore Producing Plants (continued) • Unlike its close relatives, the horsetails and the club mosses, ferns are much wider spread and can be found in tropical forests and even in the arctic. • There are over 12 000 different specimen of ferns. The leaves of ferns are called fronds. It is under these that the sporangia can be found which are tiny containers in which spores are produced. • Water is needed for ferns to complete their life cycle as the sperm need to swim to the archegonia to fertilize the eggs.

  6. Fern Life Cycle

  7. Seed Producing Plants The most successful, and the most abundant of the two subgroups, seed producing plants have specialized organs to help adapt to their current environment.

  8. Seed Producing Plants • Earth’s most successful plants due to there specialized organs, leafs, stem and roots. • The two main groups of seed producing plants are cones or flowers. • Both groups use pollination for sexual reproduction • Pollination is simply the transfer of pollen from where it was formed to a receptive surface, this is done in a number of different ways. • Because of pollination seed producing plants do not require water to complete their life cycle.

  9. Pollination

  10. Conclusion • To conclude, we can say that Vascular Plants or Tracheophytes are a diverse plant group that can be split into Spore and Seed producing plants. • They are known as vascular plants because of the xylem and phloem tissues that transport the materials throughout the plant. • They make up the majority of plants found today

  11. Questions • What is another name for Vascular Plants? • What are the two tissues Vascular Plants use to transport material? • What are the three types of spore producing plants? • How do seed producing plants reproduce?

  12. Thank You!!!

More Related