It's great that this lesson, in essence, kills two birds with one stone. Students get to learn elements of language arts and science. The two of these subjects are more related than students would like to think.
I've always been a fan of two-part lessons. They enhance students' understanding of the subject, and they help with students' comparing/contrasting skills. This two-part lesson shows an educator using a poem about a banana-eating contest as a base for drawing scientific evidence.
Imagery and science are heavily related, but many students don't make this connection. I'd suggest using this video as an informative source for explaining what poetry is, and then having students go on a nature walk. Students will then be responsible for writing poems based on the imagery that they encountered during the walk.