Question : Which of the following animals does not have a backbone?
Option 1: Frog
Option 2: Human
Option 3: Spider
Option 4: Pigeon
Correct Answer: Spider
Solution : The correct option is Spider.
There is no backbone in a spider. Spiders are invertebrates that belong to the arachnid family; unlike other vertebrates, they do not have a spinal column. Arachnids, such as spiders, are characterized by their segmented bodies and exoskeletons (external skeletons), although they do not have actual spines or backbones.
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