1 / 23

Tools of the Biologist

Biology. Tools of the Biologist. Tools. Dichotomous Key Di- Two Chotomous - Forks or Branches Used to identify…… Region Specific. Deciduous Tree Key. Deciduous - to shed all leafs on an annual basis/ usually a broad leaf tree. Bark vs. Leaf Characteristics. Deciduous Tree Key.

palila
Download Presentation

Tools of the Biologist

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. Biology Tools of the Biologist

  2. Tools Dichotomous Key • Di- Two • Chotomous- Forks or Branches • Used to identify…… • Region Specific

  3. Deciduous Tree Key • Deciduous- to shed all leafs on an annual basis/ usually a broad leaf tree. • Bark vs. Leaf Characteristics

  4. Deciduous Tree Key • Fall Leaf Color?

  5. Deciduous Tree Key • Basic Leaf Anatomy

  6. Basic Leaf Anatomy • Blade- Green or colored region of the leaf. Extends from the tip to the base. • Tip- Top of the Blade • Base- Bottom of the Blade • Mid Rib / Main Vein- all mid ribs are main veins but not vice versa. • Margin- Edge of Blade • Petiole- Stalk that may or may not be present. • Stipule- Bud that marks the point of attachment of a single leaf to the stem. • ***When counting leafs, count stipules not blades.

  7. Main Vein / Mid Rib • Main vein- any dark thick easily seen vein. • Mid rib- a main vein that divides the blade in half

  8. Leaf Characteristics • Leaf Arrangement- How the leafs are arranged on the stem. • Alternate- Not opposite • Opposite- across from each other. • M- Maples • A- Ashes • D- Dog Wood • Horse- Horse Chestnut

  9. Leaf Type- how many blades per stipule. • Simple- one blade per stipule • Compound- more than one blade per stipule

  10. HW • Draw a branch showing four alternatively arranged simple leafs.

  11. Types of Compounding • Palmate- “Fingers extending from your palm.” • Pinnate- not palmate • Leaflet- Blade on a compound leaf • Note- Terminal Leaflet • Note- Lateral Leaflet

  12. Venation- Vein Arrangement • Palmate • Pinnate

  13. Lobbing • Lobe- section of the blade created by deep indentations in the margin. Palmate Pinnate Maple Leaf Oak Leaf Palmate Vein= Palmate Lobed

  14. Margin Type • Entire- Smooth • Toothed • Finely • Coarsely • Compound See Drawing

  15. Blade Attachment • Non-Sessile (Stalked) • Contain a petiole • Sessile • Contain no petiole See Diagrams

  16. Lopsided leafs / Notched leafs and Leaflets • Lopsided Leafs- associated with simple leafs • Notched Leafs and leaflets • Associated with complex leafs.

More Related