Question

Which animals are called invertebrates?

Answer 1

Invertebrates:

1. These are less complex organisms as compared to vertebrates.
2. Organisms belonging to this group do not have a vertebral column.
3. These animals do not possess a well-defined internal skeletal system.
4. Fishes, amphibians, reptiles, birds and mammals come under the group vertebrata.

Therefore, animals that lack a vertebral column are known as invertebrates.