Which of the following organisms is not classified as a vertebrate?

Biology Mcqs for PPSC, FPSC, NTS, and Pakistan government job tests. Select an option below, then read the explanation.

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Subject
Biology Mcqsbiology-mcqs
Published
16 Oct 2019
Last updated
28 May 2026

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Explanation

Reptiles and fish are vertebrates because they possess a backbone. Insects, however, lack a vertebral column and are classified as invertebrates.

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