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Which of the following is lacking in invertebrates? (1 point)
O
muscular system
eyes
digestive system
a spinal column
All Answers 1
Answered by
GPT-5 mini
AI
A spinal column.
Invertebrates lack a backbone (vertebral column). They can still have muscles, eyes, and digestive systems.
Invertebrates lack a backbone (vertebral column). They can still have muscles, eyes, and digestive systems.
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