Osmoregulators and excretion - model answers
This diagram represents a cladogram showing one possible evolution of osmoregulation and nitrogenous waste excretion. a) Identify the three groups of animals which have the greatest ability to conserve water. Sea / desert mammals, birds and insects b) Which nitrogen containing product, urea, uric acid or ammonia, is the most toxic? Ammonia is most toxic c) Explain why it is an advantage for an animal who wishes to...