Open Question
Which of these familiar animals are all protostomes?
a. clams, shrimp, goldfish, leeches
b. butterflies, spiders, snakes, crabs
c. earthworms, snails, beetles, squid
30. Overview of Animals
Overview of Animals
Multiple Choice
Which of the following is not a characteristic of all animals?
A
Multicellularity
B
Presence of cell walls
C
Heterotrophic nutrition
D
Ability to move at some stage of life
Verified step by step guidance1
Understand the characteristics of animals: Animals are multicellular organisms, meaning they are composed of multiple cells.
Recognize that animals are heterotrophic, which means they obtain their nutrition by consuming other organisms.
Note that animals have the ability to move at some stage of their life cycle, even if they are sessile as adults.
Identify that the presence of cell walls is a characteristic of plants, fungi, and some protists, but not animals.
Conclude that the presence of cell walls is not a characteristic of animals, distinguishing them from other kingdoms like plants and fungi.
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