Dichotomous Keys

Dichotomous key

Here is my dichotomous key for module 2:

A. Woody plants-B

A’. Herbaceous plants-C

      B. With needles and coniferous- plant 1

           C. Flowers with petals-D

           C’. Flowers without petals-plant 4

                 D. 6 petaled flowers – plant 3

                 D’. 4 petaled flowers -plant 2

3 Comments

  1. Stephanie Zaborac-Reed

    A suggestion – and this is just due to my own personal preference for simplifying things (it’s neither right nor wrong):

    Move B directly under A. That way, it doesn’t look like it’s part of A’. A’ then would go straight into C and C’ as you intend. I would also move D and D’ under C rather than under C’, since it visually looks like C’ goes into D.

    Like this:
    A. Woody plants->B
    B. With needles and coniferous- plant 1
    A’. Herbaceous plants->C
    C. Flowers with petals->D
    D. 6 petaled flowers – plant 3
    D’. 4 petaled flowers -plant 2
    C’. Flowers without petals-plant 4

  2. Amy A Lortie

    Hi Alexandra:) I was a little confused by “woody” since plant 4 also could be woody (hard to tell from the photos, but once you know its a willow, it’s hard to unring that bell:) But, you could distinguish between woody with needles and woody with leaves as one of the dichotomies:)

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