Which animal does not have a skeleton Which animal has no skeleton

Animals without a skeleton are called invertebrates. Invertebrates make up over 95% of the animal kingdom. The most common invertebrates are insects, mollusks, and worms.

Insects have a hard exoskeleton, which is made of a material called chitin. Mollusks have a soft body and a shell that is made of calcium carbonate. Worms have a soft body and no shell.

All vertebrates have a skeleton. Vertebrates include fish, amphibians, reptiles, birds, and mammals. The skeleton is made of bone and cartilage. The skeleton supports the body and protects the organs.

  1. Which animal has the largest skeleton? The blue whale
  2. Which animal has the smallest skeleton? The bumblebee bat
  3. What is the function of a skeleton? It supports the body, protects the organs, and allows for movement.
  4. What animals are invertebrates? Insects, mollusks, and worms
  5. What animals are vertebrates? Fish, amphibians, reptiles, birds, and mammals
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