Which of the Following Characteristics is Unique to Animals

Question

Which of the following characteristics is unique to animals?
A) the structural carbohydrate, chitin
B) nervous system signal conduction
C) heterotrophy
D) flagellated gametes

Accepted Answer

Nervous system signal conduction is unique to animals, as it is a characteristic of their complex nervous systems, allowing for rapid communication between cells. Other options like chitin (found in fungi and some animals), heterotrophy (common in fungi and some protists as well), and flagellated gametes (seen in plants, fungi, and some protists) are not unique to animals.