Animals are broadly classified as vertebrates or invertebrates based on which characteristic?

Explanation

Animals are broadly classified as vertebrates, meaning they possess a backbone, or spinal column, or invertebrates, meaning they lack this internal skeletal structure. Vertebrates include familiar groups like mammals, birds, reptiles, amphibians, and fish, while invertebrates make up the vast majority of animal species on Earth and include insects, worms, mollusks, and many other groups. This classification is based purely on skeletal structure and does not directly correspond to an animal’s size, habitat, or other characteristics. Explore more Everyday Science MCQs on mcqstutor to keep practicing.