Question Video: Identifying Why an Octopus is an Invertebrate Biology • First Year of Secondary School

Video Transcript

An octopus, pictured, is an invertebrate, so it does not have blank. (A) A specialized nervous system, (B) the ability to reproduce, (C) a backbone, (D) specialized sex organs, or (E) a circulatory system.

The kingdom Animalia can be divided into two groups vertebrates and invertebrates. The difference between these groups is the presence of a vertebral column, also known as a backbone. Invertebrates, such as jellyfish, crustaceans, and insects, do not have a backbone, while vertebrates do have one. Octopus are invertebrates. This is because they do not have (C), a backbone.