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Concepts of Biology

Critical Thinking Questions

Concepts of BiologyCritical Thinking Questions


How are specialized tissues important for animal function and complexity?


Using the following terms, explain what classifications and groups humans fall into, from the most general to the most specific: symmetry, germ layers, coelom, embryological development.


Describe the feeding mechanism of sponges and identify how it is different from other animals.


Compare the structural differences between Porifera and Cnidaria.


Speculate as to what advantage(s) a complete digestive system has over an incomplete digestive system?


Describe a potential advantage and disadvantage of the cuticle of ecdysozoans.


Describe the morphology and anatomy of mollusks.


Sessile adult tunicates lose the notochord; what does this suggest about one function of this structure?


During embryonic development, what features do we share with tunicates or lancelets?


What can be inferred about the evolution of the cranium and the vertebral column from examining hagfishes and lampreys?


Explain why frogs are restricted to a moist environment.


Describe three adaptations that allow for flight in birds.

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