1. Which of the following traits is not characteristic of animals?

multicellular body structure

composed of cells with cell walls

heterotrophic food-getting pattern

composed of eukaryotic cells

  1. Which of the following describes the MOST important difference between invertebrates and vertebrates?

Vertebrates contain multiple tissues, while invertebrates do not.

Invertebrates contain multiple tissues, while vertebrates do not.

Vertebrates contain a backbone, while invertebrates do not.

Invertebrates contain a backbone, while vertebrates do not.