22-4 Seed Plants


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Katie Miller
Mr. Collins
Bilogy period 4

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22-4 Seed Plants

  1. 1. Katie Miller Mr. Collins Biology 4 32 March 2010 22-4 Seed Plants
  2. 2. <ul><li>Gymnosperms (JIM-noh-smurmz): seed plants that bear their seeds directly on the surface of cones. </li></ul><ul><li>Angiosperms (AN-jee-oh-spurmz): seed plants that bear the their seeds in a protective layer of tissue. </li></ul>Seed Plants
  3. 3. <ul><li>Flowers & cones, pollination, & the protection on embryos in seeds are all important adaptations that allow seed plants to reproduce without water. </li></ul><ul><li>- Cones: seed-bearing structures for gymnosperms. </li></ul><ul><li>- Flowers: seed-bearing structures for angiosperms. </li></ul>Reproduction Free From Water
  4. 4. <ul><li>- Pollen: A tiny structure in plants that contain the male gametophyte. </li></ul><ul><li>- Pollination: The transfer of pollen from a male gametophyte to a female gametophyte. </li></ul><ul><li>- Seed: An embryo of a plant that is encased in a protective covering, called the seed coat, & surrounded by a food supply, </li></ul><ul><li>-The seed coats often have wings or textures to help them be pollinated by floating through the air or sticking to animals’ fur.   </li></ul>
  5. 5. <ul><li>Gymnosperms include gnetophytes, cycads, ginkgoes, conifers. </li></ul><ul><li>1.  Gnetophytes </li></ul><ul><li>- The plants’ reproductive scales are clustered into cones. </li></ul><ul><li>2. Cycads </li></ul><ul><li>- Beautiful palm-like plants that reproduce with large cones. </li></ul><ul><li>- Their fossils date back as far as 225 million year ago, during the Triassic Period. They can still be found in tropical areas. </li></ul>Gymnosperms---Seed Bearing Plants
  6. 6. <ul><li>3. Ginkgoes </li></ul><ul><li>- Common around the time of the dinosaurs. However the phylum Ginkgophyta (ging-KOH-fy-tuh) now only has one species left, Ginkgo biloba. </li></ul><ul><li>4. Conifers </li></ul><ul><li>- The most common. </li></ul><ul><li>- Contains species such as spruce, yew, cedar, redwood & many others. </li></ul><ul><li>- These trees can live as long as 4000 years & grow as tall as100 meters. </li></ul>
  7. 7. <ul><li>Seed plant ancestors went through many adaptations. These adaptations have allowed seed plants to live in many placed non-seed bearing plants couldn’t survive in. </li></ul><ul><li>300-400 million years ago the land was very damp. However as the years went by the land dried out making it difficult for non-seed bearing plants to thrive. They were replaced by seep plants. </li></ul>Evolution of Seed Plants
  8. 8. <ul><li>Miller, Kenneth R., and Joseph S. Levine. Prentice Hall Biology . Upper Saddle River, N.J.: Prentice Hall, 2002. Print. </li></ul><ul><li>Photograph. Berkeley.edu . nd. Web. 31 Mar. 2010. <http://www.ucmp.berkeley.edu/seedplants/seedplantsfr.html>. </li></ul><ul><li>Photograph. P H O T O N - E C H O E S . C O M . Lauri A. Kangas, 2010. Web. 31 Mar. 2010. <http://www.photon-echoes.com/images/nature/flowers/060703-4w.JPG>. </li></ul><ul><li>Photograph. Petside.com . The Petside Digital Network: Petside UK, nd. Web. 31 Mar. 2010. <http://www.petside.com/petsideblog/2009/05/07/7-sago-palm.jpg>. </li></ul><ul><li>Photograph. Wikimedia.org . Wikimedia Foundation, Inc.,, 17 Jan. 2006. Web. 31 Mar. 2010. <http://upload.wikimedia.org/wikipedia/commons/thumb/e/ee/Pollen.arp.750pix.jpg/300px-Pollen.arp.750pix.jpg>. </li></ul><ul><li>Photograph. Wikimedia.org . Wikimedia Foundation, Inc.,, 22 Jan. 2008. Web. 31 Mar. 2010. <http://www.google.com/imgres?imgurl=http://upload.wikimedia.org/wikipedia/commons/thumb/e/ee/Pollen.arp.750pix.jpg/300px-Pollen.arp.750pix.jpg&imgrefurl=http://en.wikipedia.org/wiki/Wikipedia:Picture_of_the_day/December_2005&h=263&w=300&sz=20&tbnid=E5BSnKsyFn39QM:&tbnh=102&tbnw=116&prev=/images%3Fq%3Dpicture%2Bof%2Bseed%2Bplants&hl=en&usg=__ier-VWOHFPFNcOy2mrau2QLTvAw=&ei=knWzS82BDYK0MNOEyY8E&sa=X&oi=image_result&resnum=2&ct=image&ved=0CA4Q9QEwAQ>. </li></ul><ul><li>Photograph. Wikipedia.org . Wikimedia Foundation, Inc, 17 Jan. 2006. Web. 31 Mar. 2010. <http://www.google.com/imgres?imgurl=http://upload.wikimedia.org/wikipedia/commons/thumb/e/ee/Pollen.arp.750pix.jpg/300px-Pollen.arp.750pix.jpg&imgrefurl=http://en.wikipedia.org/wiki/Wikipedia:Picture_of_the_day/December_2005&h=263&w=300&sz=20&tbnid=E5BSnKsyFn39QM:&tbnh=102&tbnw=116&prev=/images%3Fq%3Dpicture%2Bof%2Bseed%2Bplants&hl=en&usg=__ier-VWOHFPFNcOy2mrau2QLTvAw=&ei=knWzS82BDYK0MNOEyY8E&sa=X&oi=image_result&resnum=2&ct=image&ved=0CA4Q9QEwAQ>. </li></ul><ul><li>Strelitzia . Photograph. Wikipedia.org . Wikimedia Foundation, Inc., 17 Jan. 2006. Web. 31 Mar. 2010. </li></ul>Bibliography