Dicots & Monocots
Find the bamboo grove on Post near Stono. Compare a bamboo leaf with a grass blade and a tree leaf. What differences/similarities do you find in the way the veins are arranged? Look up the difference between dicot and monocot in a dictionary or biology book.
For fun, dissect a lima bean and look for two leaflike "cotyledons." Try sprouting a bean and a brown rice grain and see what comes up.