Attached is my dichotomous key for module 2. Apologies for the late reply, I should be caught up shortly.
Dichotomous Key-Jarid Sox
Comments
5 responses to “Dichotomous Key-Jarid Sox”
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Hi Jarid,
I think your key does a great job at keying out the four plants and being easy to follow. Your key also uses the correct structure. Only thing I would say to revise it that for C you could say “C has white petals and C’ doesn’t have white petals” to keep it simpler.Best Matt
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Hey Jarid! I think your key is very helpful for identifying the four plant specimens. The terminology is unambiguous and helped me understand what you were asking about each. For someone who doesn’t know plant terminology, this might be harder to understand, as Angiosperms and Gymnosperms might not be immediately identifiable. Overall, though, I think it does a great job of communicating which plant is which.
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Hi Jarid –
Matt is right – simple is best!
There are a couple of issues with this key. The first is that Plant 4 is a catkin. That IS occasionally considered a kind of spike or raceme, sort of, but it is profoundly different from Plants 2 and 3 in a very key, important way (enough you could use it as a couplet). That key way is why the C’ branch is incorrect. Can you tell me why?
You got the Rubric, at least! You just made an inaccurate observation. Go ahead and make some corrections.
Good job!
Steph the TA-
Oh, I think I found out why. When I looked up the catkin it does not actually have petals, so I described the petals as yellow, when I believe it could have been more accurately described as yellow bracts.
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Exactly! I’m not sure I’d call them bracts, to be honest, since bracts are leaves, and the yellow feature are stamens which IS part of the flower – but I won’t quibble the point, since you got where you needed to be! Catkins are racemose (they are racemes) like Plant 2, so the key works.
Great job!
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