Which of the following statements accurately describes the relationship between the ectoderm, mesoderm, and endoderm in triploblastic animals?
Understand the Problem
The question asks about the relationship between the three germ layers (ectoderm, mesoderm, and endoderm) in triploblastic animals. It requires understanding which germ layer gives rise to specific tissues and organ systems.
Answer
Triploblastic animals have three layers: ectoderm (outer), mesoderm (middle), and endoderm (inner).
In triploblastic animals, the ectoderm is the outer layer, the endoderm is the inner layer, and the mesoderm is the layer in between the ectoderm and endoderm.
Answer for screen readers
In triploblastic animals, the ectoderm is the outer layer, the endoderm is the inner layer, and the mesoderm is the layer in between the ectoderm and endoderm.
More Information
The germ layers (ectoderm, mesoderm, and endoderm) are significant because they give rise to different tissues and organ systems in the developing animal. The ectoderm typically forms the skin and nervous system, the mesoderm forms muscles, bones, and the circulatory system, and the endoderm forms the lining of the digestive tract and associated organs.
Tips
A common mistake is confusing the order of the layers. Remember that 'ecto' means outer, 'meso' means middle, and 'endo' means inner.
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