Question

invertebrate definition only five lines for this definition​

Answer 1

Answer:

Invertebrates are animals that don’t have a backbone. The vertebral column is another name for the backbone. Over 90% of all species on Earth are invertebrates, and invertebrate species have been found in the fossil record as far back as 600 million years ago. Molecular biology studies suggest that all invertebrates evolved from a single invertebrate group.

Answer 2

Answer:

Invertebrates are animals that don’t have a backbone. The vertebral column is another name for the backbone. Over 90% of all species on Earth are invertebrates, and invertebrate species have been found in the fossil record as far back as 600 million years ago. Molecular biology studies suggest that all invertebrates evolved from a single invertebrate group.

Explanation:

Invertebrates share four common traits:

• They do not have a backbone.

• They are multicellular. ...

• They have no cell walls, like all other animals.

• They reproduce by two reproductive cells, or gametes, coming together to produce a new organism of their species.