Question

How is an exoskeleton similar to an internal skeleton how is it different

Answer 1

Differences.

Exoskeleton

1. Hard part that lies outside of the body

2. Develops from ectoderm

3. Composed mainly of  hard non-living material called chitin.

Endoskeleton

1. Hard part that lies inside the body

2. Develops from endoderm

3. Composed of living material i.e. bone tissue

 Similarities

Both endoskeleton and exoskeleton play a protective role. The  endoskeleton protects internal body organs of the organism. The exoskeleton  protects the soft  body parts and appendages of the organism.

Both endoskeleton and exoskeleton provide structural support and shape to the  concerned organism.

Answer 2

They're similar because they're both skeletons. The difference is one is inside the body and the other is out. (Endoskeleton - "endo" means in. Exoskeleton - "ex" mean out.) I hope this helps!