5 Questions
Which clade contains animals such as nematodes, arthropods, flatworms, annelids, and molluscs?
Protostomes
What is the estimated number of living animal species as of 2022?
7.77 million
What is the body plan of most living animal species?
Bilaterally symmetric
When did the Cambrian explosion begin?
539 million years ago
What is the scientific study of animals known as?
Zoology
Test your knowledge of the animal kingdom with this quiz! Explore the diversity of multicellular, eukaryotic organisms, their characteristics, and the vast number of species. From basic biology to specific animal facts, challenge yourself with questions about animal behavior, anatomy, and more.
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