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Botany Standard 4: Field Identification. Week 9 Ms. Darlak. Warm-up 05/16. List all the things you can use to identify a plant. Agenda 05/16. Intro to Standard 4 Dichotomous Keys Greenhouse Check Transplants. Standard 4: Field Identification. Requirements. Field Notebook

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Presentation Transcript
warm up 05 16
Warm-up 05/16
  • List all the things you can use to identify a plant.
agenda 05 16
Agenda 05/16
  • Intro to Standard 4
  • Dichotomous Keys
  • Greenhouse Check Transplants
requirements
Requirements
  • Field Notebook
  • Identification of 6 plants with use of a dichotomous key
  • Extra Credit Voucher Collection
dichotomous keys
1

2

3

4

5

6

Dichotomous Keys
  • Dichotomous means "divided in two parts".
  • Each step has two choices; what you choose leads you to another question until the item is identified.
  • Based on physical characteristics.
dichotomous key activity
Dichotomous Key Activity
  • DARLAK4SCIENCE
  • Botany Standard 4
  • Mystery Tree #
  • Fill out Tree Information
  • Practice Keying out all the other trees
warm up 05 26
Warm-up 05/26
  • Using the Key Provided….

Key out this plant to genus and species.

slide9
1. Leaves not spines
  • 2. Lvs Opposite
  • 3. Lvs simple
  • 5. Lvs PALMATELY lobed.
  • Acer …….GO TO p 202.
    • 1. Lvs less than 5”
    • 2. Lobes 5-9, mostly 7, fanlike.
    • Acer circinatum
warm up 05 17 what where the major tree characteristics that you used to identify your tree
Warm-up 05/17What where the major tree characteristics that you used to identify your tree?

Broadleaves

Needle-like Leaves

Single, flat or clustered

Clusters of 2 or clusters of 5

Needles less than 2 inches long

Needles greater than 2 inches long

  • Simple or Compound
  • Alternate or Opposite
  • Lobed or unlobed
  • Toothed or not toothed
  • Paper bark or not
agenda 05 17
Agenda 05/17
  • Make a Dichotomous Key
  • Key to PNW Broadleaved Trees and Shrubs
group task
1

2

3

4

5

6

GROUP TASK
  • Each group gets ONE paper bag
  • Make a Dichotomous key for ALL the items in the bag.
  • Follow the Procedures.
procedures
PROCEDURES
  • First make and answer key.
    • Write the names of your partners and bag # on your ANSWER key.
    • Assign a number to each object and make up a new name “scientific name” for each object.
      • Example: #1--------Mollusca minuta (small shell)
      • May want to trace an outline of the object
  • Make a dichotomous key for all objects in your bag.
key format example
Key Format Example
  • A. Item is round………………………go to 2

B. Item is not round…………………….go to 3

Better

  • A. Item flat on 2 sides…………..…go to 2

B. Item is not flat on 2 sides…….go to 5

  • A. Item is > than 4 inches in diameter….4

B. Item is < than 4 inches in diameter… 3

  • A. Item has “Frozen Four” on one flat side and “Bauer” on the other side of flat side………….Hockey discus.

B.Does not have any writing on it….go to 6

warm up 05 18
Warm-up 05/18
  • Use the Key Provided to Key out a leaf.
  • Write the Leaf # and Species on your sheet.
agenda 05 18
Agenda 05/18
  • Greenhouse
  • Finish and Grade each others Dichotomous Keys
  • Intro to PNW Broadleaved Trees and Shrubs
  • Use the key.
grading the keys
Grading the Keys
  • Switch bags and keys with another group.
  • Use their key to identify the items.
  • Write the scientific name next to the object name.
  • Give them a grade from 1-10 on their descriptions and accuracy of the items.
key vocabulary
Key Vocabulary
  • < less than
  • > greater than
  • Bilateral Symmetry
  • Radial Symmetry
key to pnw broadleaved trees and shrubs
Key to PNW Broadleaved Trees and Shrubs
  • Sharp Spines, few leaves, “normal” blades.
key to pnw broadleaved trees and shrubs1
Key to PNW Broadleaved Trees and Shrubs
  • Leaves Opposite
  • Leaves Alternate
warm up 05 19 key out the following shrub
Warm-up 05/19Key out the following shrub.

Entire Twigs Armed, Stems Round, Prickles exfoliate with bark

answer
Answer
  • 1. Normal Blade
  • 2. Lvs. Alternate
  • 16. Lvs Compound
  • 68. Twigs armed
  • 69. Entire twig/stem armed
  • 70. Leaflets lg, 1.5-3.5” usually 3-5 leaflets
    • Rubus spp p. 184
    • 1. Lvs compound, stems armed
    • 2. Stems round in x-section
    • 4. Prickles exfoliate with bark
    • Rubus spectabilis (Salmon Berry)
agenda 05 19
Agenda 05/19
  • Key Practice Together
  • Pass Back
    • Germination Lab (Test grade) can resubmit with first draft to improve grade.
    • Draft Landscape Design (Standard)
      • Final Draft Due Tues 05/24
  • Greenhouse
    • Check Transplants
    • Key one plant (Field Notebook Assignment #1)
warm up 05 20
Warm-up 05/20
  • Using the Key Provided….

What tree does this branch belong to?

Lvs: < 1.5”, spirally arranged, not on woody pegs

green key
Green Key
  • 1.Leaves NOT like above, linear, spirally arranged.
  • 7. Needles individual
  • 10. Needles evergreen
  • 11. Needles may be single
  • 13. Leaves NOT ternate, linear
  • 14. Leaves < 1.5” long, not sharp
  • 16. Needles leave distinct leaf scar…..
    • Pseudotsuga
agenda 05 20
Agenda 05/20
  • Reminders
    • Germination Lab (Test grade) can resubmit with first draft to improve grade.
    • Draft Landscape Design (Standard)
      • Final Draft Due Tues 05/24
  • Greenhouse
    • Check Transplants
  • Work Day
    • Library Lab C
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