One True Characteristic of All Animals is That They

Question

One true characteristic of all animals is that they:
A) are mobile.
B) have a brain.
C) are heterotrophs.
D) have an organ system.
E) only show sexual reproduction.

Accepted Answer

Animals are heterotrophs, meaning they obtain their energy by consuming other organisms. Unlike plants that can produce their own energy through photosynthesis, all animals need to eat either plants, other animals, or both to survive. This is a fundamental characteristic of the animal kingdom.