Question

Identify traits that characterize all animals.

Answer 1

The characteristics to identify animals are:

1. Animals are multicellular.
2. Animals are heterotrophic, obtaining their energy by consuming energy-releasing food substances.
3. Animals typically reproduce sexually.
4. Animals are made up of cells that do not have cell walls.
5. Animals are capable of motion in some stage of their lives.
6. Animals are able to respond quickly to external stimuli as a result of nerve cells, muscle or contractile tissue, or both.