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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

  • True
  • False

11. Amphibians are the only class of vertebrates with no protective skin covering

  • True
  • False

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

13. Amniote egg is

  • Impermeable
  • Permeable

14. Do the larval forms of amphibians live aquatic or terrestrial habitats?

  • Aquatic
  • Terrestrial

15. How many known amphibian species are there?

  • 8000
  • 80,000
  • 6000
  • 60,000