Question

Define the term Invertebrates.​

Answer 1

Answer:

Invertebrates are animals that neither possess nor develop a vertebral column (commonly known as a backbone or spine), derived from the notochord. This includes all animals apart from the subphylum Vertebrata. ... The majority of animal species are invertebrates; one estimate puts the figure at 97%.

Answer 2

Answer:

Invertebrate, any animal that lacks a vertebral column, or backbone, in contrast to the cartilaginous or bony vertebrates. More than 90 percent of all living animal species are invertebrates.

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