Dichotomous Key

  1. Plant with needles —- Plant 1
  2. Plant with leaves
    • Plant with flower petals
      • White petals and sepals attached —– Plant 2
      • Purple petals and sepals detached —- Plant 3
    • Plant without flower petals —- Plant 4

Formatting didn’t quite transfer over correctly and my letters turned into dots. Hopefully it is still clear enough with the indenting.

Comments

4 responses to “Dichotomous Key”

  1. Steph the TA Avatar
    Steph the TA

    Hi Paige –

    There are a couple of issues with this key, and you will want to resubmit (it will be worth points to do so). To get around the dot issues, try manually typing all the letters in and using spaces to keep the indents (it’s annoying, I agree, but worth it to your grade).

    Per the Rubric, your couplets should all feature a single, unique characteristic. Keep it simple, and use the most obvious feature.

    Each line of a couplet should either resolve to a specimen (Plant without flower petals -> Plant 4) or point to a new couplet (B. Description -> C, for instance). That way, if formatting on a page goes totally wonky and you lose your indents, the reader knows where to go next. Take a look at what some of your other classmates are doing.

    Related to that, each individual couplet should have the same letter designation – with the second letter differentiated slightly to indicate it is unique. Look at your classmates are doing, with attention to A and A’ as designations on the first couplet.

    As you have done here (Plant with flower petals and Plant without flower petals), you can imbed a next level couplet within a pair. I prefer that myself, because it shows me how the couplets are related to each other. It’s not required, but it is SO much easier to follow!

    Please try again.
    Thank you!

  2. Paige Hochhalter Avatar
    Paige Hochhalter

    A. Plant with needles —- Plant 1
    A’. Plant with leaves —-B
    B. Plant without flower petals —- Plant 4
    B’. Plant with flower petals—– C
    C. White flower petals —– Plant 2
    C’. Purple flower petals —- Plant 3

    Thanks for your help with revising my key! After trying to use the Hulten and Cody keys, I think I got a little confused with formatting.

  3. Paige Hochhalter Avatar
    Paige Hochhalter

    It is going to take some getting used to this platform. I typed out a bunch of spaces, but it didn’t seem to matter.

    1. Steph the TA Avatar
      Steph the TA

      Worse – the spacing works sometimes, and then sometimes it doesn’t! I don’t know the rhyme or reason to it, so I’m not going to worry about it, and I’ll give you credit for it.

      Your A’ branch is slightly problematic — because needles ARE leaves. So thinking about your A branch of that couplet – don’t change it because it’s fine – , and then, thinking about how you phrased your B Couplet, what can you say about A’?

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