The organisms shown in the pictures above can be categorized based on structural similarities and differences.

Question

Part A: based on similarities in their internal structures, name a category to which organism X and organism Z belong, but to which organism Y does not. Explain your reasoning.

Part B: using the same classification scheme you selected for part A, identity another organism that would be categorized into the same group as organism Y. Explain your reasoning

Answer 1

Part A: Based on similarities in their internal structures, organism X and organism Z belong to the category of vertebrates, but organism Y does not. This is because both organism X and organism Z have a well-defined spinal column or backbone, which is a characteristic feature of vertebrates. Organism Y, on the other hand, does not have this structure present, indicating that it does not belong to the vertebrate category.

Part B: Given that organism Y does not belong to the category of vertebrates, another organism that would be categorized into the same group as organism Y can be an invertebrate. Invertebrates are organisms without a backbone or spinal cord. One example of an invertebrate that can be categorized into the same group as organism Y is a jellyfish. Jellyfish also do not possess a well-defined spinal column or backbone, and therefore, they belong to the same category of invertebrates as organism Y.