Differences between plants and animals, cellular structure, and types of symmetry (radial vs. bilateral).
Comparing how respiratory, circulatory (open vs. closed), and nervous systems evolve across different groups. Differences between plants and animals
Placing animals in the correct taxonomic order (Kingdom → Phylum → Class, etc.). circulatory (open vs. closed)
Attempt the final check questions in your textbook or workbook without looking at the answers to identify your weak spots. various worm phyla
Key features of Protozoa, Coelenterates (jellyfish/hydra), various worm phyla, Mollusks, and Arthropods (insects, arachnids, crustaceans).