I use the Maybe Montessori botany puzzles and made (adapted) these:
Magnetic botany charts: seed, root, fruit, stem parts
To use this material, I print out a blank picture and the labelled one. I print out a set of labels and back them with magnetic tape. I put the unlabelled diagram on a dollar store cookie sheet. I put the “answer sheet” under the stack of trays on the bottom right of the plant area.
*Sorry about the picture quality. My phone wasn’t cooperating.
We own “real” puzzles for the frog, turtle, and fish, but we didn’t own any for the bird and mammals.