I have one more question. I think the author of this book made a mistake on the next analogy. Take a look and see if you agree.

Platyhelminthes:platypus
a)plateau:platitude
b)worm:marsupial
c)mammal:science
d)crystalline:canine

I think the author mistakenly labeled a platypus as a marsupial. Everything I find says they are not marsupials. Your thoughts?

3 answers

True.

Is the author looking for similarities of words -- such as plateau:platitude??
Well I am supposed to find the best relationship between the groups of words. Such as synonyms, antonyms, time, form etc. I thought about the flat angle with plateau and platitude, but I didn't feel comfortable with that answer. What are your thoughts?
I think Ms. Sue is right: 2 that start with "platy-" and 2 that start with "plat-" -- the others have no such similarities.