They are different in terms of petals. The wind pollinated flowers usually have dull and less elaborate petals, for they do not have a need to attract insects to help them pollinate. On the other hand, the insect pollinated flowers tend to have bright and colourful petals so that insects would be attract to the flower. I really hope this helped you. :)
It is the only line centered around death and the main focus (being the captain) and it's just mostly obvious context clues. Don't stress out the poems, they're easy if you don't think too hard on them.
