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6. Which is not a shared characteristic of Amniotes?
- Waterproof skin
- Rib ventilation of the lungs
- Free swimming larvae
- Shelled egg protected by amniotic membranes
7. What disease is really threatening amphibians?
- Honeybush fungus
- Chytrid fungus
- Malaria
- Aids
8. The amnion has allowed what?
- The colonisation dry environments
- Well protected young (from predators)
9. Animal moves the floor of its mouth to inflate lungs - what is this called?
- Gas exchange
- Lung inflation
- Buccal pumping
- Respiration
10. More post-orbital openings behind each eye allows muscles to expand and lengthen
11. Amphibians are the only class of vertebrates with no protective skin covering
12. Why are most modern amphibians confined to moist environments?
- Permeable skin will rapidly loose water
- They cannot breath in dry conditions
- They can only breed in moist enviornments
14. Do the larval forms of amphibians live aquatic or terrestrial habitats?
15. How many known amphibian species are there?