Which one of the following features is unique to animals?
A)cells organized into tissues
B)movement associated with muscle tissue and nervous tissue
C)heterotrophism
D)cells without walls
E)embryonic development

Question

Quizplus · Accepted Answer

While all of the answer choices may apply to different groups of organisms, movement associated with muscle tissue and nervous tissue is a unique feature to animals. Plant cells also lack walls in some areas (such as plasmodesmata), and both plants and fungi can have tissues. Heterotrophism is also present in many other groups of organisms. Embryonic development is seen in some animals as well as in plants.

Which One of the Following Features Is Unique to Animals