5 Questions
What is the scientific study of animals known as?
zoology
Which clade do most living animal species belong to?
Bilateria
What is the estimated number of living animal species as of 2022?
7.77 million animal species
During which geological period did the Cambrian explosion, leading to the establishment of many modern animal phyla, begin?
around 539 million years ago
What are the two main groups within the clade Bilateria?
protostomes and deuterostomes
Study Notes
Zoology
- The scientific study of animals is known as zoology.
Classification of Animals
- Most living animal species belong to the clade Bilateria.
Diversity of Animals
- As of 2022, there are an estimated number of living animal species.
Evolution of Animals
- The Cambrian explosion, which led to the establishment of many modern animal phyla, began during the Cambrian geological period.
Bilateria
- The two main groups within the clade Bilateria are Deuterostomia and Protostomia.
Test your knowledge of the animal kingdom with this quiz! Explore the diversity of multicellular, eukaryotic organisms, their characteristics, and the vast array of species. From basic biology to fascinating facts, challenge yourself with questions about the world of animals.
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