How do iguanas maintain water and ion balance?

A) Marine iguanas produce urine that contains a higher ion concentration than blood.
B) A specialized salt gland in their nose produces a highly concentrated salt solution that is expelled.
C) Marine iguanas use their kidneys to excrete excess salt.
D) Marine iguanas need to drink fresh water on land to maintain the optimal water and ion balance.


Answer: B

Anatomy & Physiology

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