Vertebrates belong to phylum chordata because:
Correct answer: D. The body develops from three germinal layers
- A. They have a vertebral column
- B. The brain is enclosed by the skull
- C. The embryos have gills
- D. The body develops from three germinal layers
Explanation
Chordates, including vertebrates, undergo embryonic development with three primary germinal layers: ectoderm, mesoderm, and endoderm. These layers give rise to different tissues and organs, enabling the complex body development seen in chordates.
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