The evolution of the vertebrate skeleton system
A)originated with a snake-like animal whose descendants gradually developed limbs.
B)enabled tetrapods to colonize land.
C)originated in an earlier exoskeleton.
D)made animals significantly taller.

Question

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The evolution of the vertebrate skeleton system enabled tetrapods (animals with four limbs) to colonize land, which was a significant step in the evolution of animals. The development of limbs and the skeletal adaptations necessary for walking on land allowed vertebrates to explore new habitats and diversify into a wide range of species. There is no evidence to suggest that the skeleton system originated in an exoskeleton, and while some animals may have become taller with the development of a skeleton, this is not a defining characteristic of the system. The origin of the skeleton system is also not linked to a snake-like ancestor as snakes are a relatively recent group of vertebrates.

The Evolution of the Vertebrate Skeleton System