Gas Exchange in Frogs, Fish, and Insects
Complete this table to show how each organism is adapted for gas exchange.
Frogs
Mouth:
Fish
Structure
Gills:
Insects
Spiracles:
Lungs:
Tracheal Tubes:
Skin:
Tracheoles:
Gas Exchange in Frogs, Fish, and Insects
1. Outline the advantages that frogs have over other creatures when performing gas exchange.
2. Explain the purpose of the cuticle around the body and hairs at the opening of the spiracle in
insects?
3. Explain how insects increase gas exchange during strenuous activity.
4. Describe a particular difficulty fish need to overcome that insects do not when performing gas
exchange.
5. Explain the importance of the countercurrent mechanism in fish.