Question

He majority of animals are invertebrates. This means that they have this characteristic.

lack a backbone

have a backbone

lack cell walls

have cell walls​

Answer 1

Invertebrates lack a backbone, they also lack cell wall.

Step-by-step explanation:

All animals lack cell wall.

Vertebral column is absent in invertebrates.

Answer 2

Lack a backbone

Step-by-step explanation:

Invertebrates are animals that no not have a backbone. 'Vertebrae' is the scientific term for a spine. The prefix 'in' implies a lack of something, in this case, a backbone.

So, an invertebrate is an animal that does not have a backbone.