ISB 202 MSU Final Exam Questions & Answers 2024/2025

ISB 202 MSU Final Exam Questions & Answers 2024/2025 Animals are what? - ANSWERSAll animals are heterotrophic (eat or parasitize other organisms). About how many million species of animals are known to exist? - ANSWERSmore than 2,000,000 species Most animal species are ____? - ANSWERS1,950,000 are Invertebrates. What type of symmetry is exhibited by things like starfish? - ANSWERSRadical - symmetrical around a central axis What phylum was the first to have a complete digestive system? - ANSWERSRoundworms What phylum was the first to have organs? - ANSWERSFlatworms What phylum was the first to have tissues? - ANSWERSCnidarians What phylum of animals has no tissues or organs and also lacks symmetry? - ANSWERSSponges "Coelum" - ANSWERSBody cavity What phylum was the first to have coelomate bodies? - ANSWERSMollusks. There are 11 phyla of animals, ranging from the _______ to the "highest form," the __________. - ANSWERSSponges to the Chordates