11. Amphibian identity card.
How are amphibians
characterized according to
examples of representing
beings, basic morphology,
skin, respiration, circulation,
nitrogen waste, thermal
control and types of
reproduction?

Gap-fill exercise

Fill in all the gaps, then press "Check" to check your answers. Use the "Hint" button to get a free letter if an answer is giving you trouble. You can also click on the "[?]" button to get a clue. Note that you will lose points if you ask for hints or clues!
Examples of representing : frogs,
toads, salamanders. morphology:
two pairs limbs, eyelids,
hydrodynamic . Skin: moist and
, mucous glands. Respiration:
and pulmonary, branchial
larval stage. Circulation: ,
incomplete, heart with chambers
without interventricular .
Nitrogen waste: urea. control:
heterothermic. Types reproduction:
sexual, water , external
fecundation and larval stage.