Multiple choice

35 phyla of the animal kingdom can be divided into two groups. What separates the two groups?

  1. whether they have fur or feathers

  2. whether they live on land or water

  3. whether they have more than one cell

  4. whether they are vertebrates or invertebrates

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The animal kingdom is primarily divided into vertebrates (animals with a backbone) and invertebrates (animals without a backbone). This is a fundamental distinction in animal classification.