Take A Dive Into This Amazing Sea Creatures Quiz!

QUESTION 1-Which of the following is a defining characteristic of all invertebrates?

Correct Incorrect They have no backbone: Unlike vertebrates, which have a well-developed internal skeleton made of bone or cartilage, invertebrates lack this characteristic feature.

QUESTION 1-Which of the following is a defining characteristic of all invertebrates?

They have no backbone
They are warm blooded
They are symmetrical
They are herbivores