Aquatic plants
Download
1 / 8

Aquatic Plants - PowerPoint PPT Presentation


  • 141 Views
  • Uploaded on

Aquatic Plants. The Flowering Plants That have returned to Aquatic Environments. Why go back to the water? . Support from water Less need for strong, thickened stems Must be flexible to move with currents or waves Therefore they are all herbaceous (no shrubs/trees)

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about ' Aquatic Plants' - step


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.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
Aquatic plants

Aquatic Plants

The Flowering Plants

That have returned to

Aquatic Environments


Why go back to the water
Why go back to the water?

  • Support from water

    • Less need for strong, thickened stems

    • Must be flexible to move with currents or waves

      • Therefore they are all herbaceous (no shrubs/trees)

  • Protection in the water

  • Water as a medium for sexual reproduction

  • Emergent option (feet in the water, heads in the air)

  • Earth has a lot of water (marine, fresh, and brackish)

  • 79 families and 380 genera have made the switch!


Adaptations
Adaptations

  • Leaves

    • Often long and narrow, with a central cluster or non-thickening conducting tubes

  • Stems

    • Spongy stem tissue through which gases can diffuse

    • To help ‘pump’ oxygen to the submerged roots

  • Roots

    • May have tuber-producing rhizomes

  • Flowers

    • Pollination and seed dispersal via insects and wind/water

    • Pollen grains are thread-like, why do you think this is?


Asexual reproduction
Asexual Reproduction

  • Very important in aquatic plants!

  • Resulting in extensive ‘clones’ of genetically identical plants in the surrounding area


Who uses them
Who uses them?

  • Aquatic Food Webs

    • Fed upon by aquatic organisms (or indirectly)

    • Provide habitat or hunting areas

    • By blocking sunlight, the keep algae blooms down

  • Human Uses

    • Materials for food

    • Clothes, mats and baskets

    • Removal of invasive species, which choke waterways


Bc native
BC Native

  • Yellow Pond Lily

  • Nupharpolysepalum


Bc native1
BC Native

  • Common Eel-Grass (Zostera marina)

  • The flowers are released to float upwards, cool eh?


Our bio11 floaters
Our Bio11 Floaters!

  • Water Hyacinth

  • Water Lettuce

    • Take a sample to draw in actual size

    • Then view plant tissues with microscopes

    • Complete a sketch of the field of view for close up of leaves, stems, and roots

    • This will be handed in by tomrorow

    • Come after school for more microscope time


ad