Class 4 · Science · Hard level · 5 questions
Vertebrates & Invertebrates: Apply It
The great divide in the animal kingdom: with a backbone, or without. In Class 4 Science the topic covers one question splits them all, what a backbone does, the five vertebrate groups and most animals are invertebrates. This quiz is the hardest level, with Class 4 exam-style questions that mix the ideas together. 5 questions (multiple choice), marked the moment you finish, with the reason for every answer.
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