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What is a role of the kidney in the excretory system of mammals? (A) To remove salt from the body and to keep water in the body (B) To remove water from the body and to keep salt in the body (C) To remove nitrogenous waste from the body and to maintain water levels in the body (D) To remove water from the body and to maintain levels of nitrogenous substances in the body - HSC - SSCE Biology - Question 6 - 2009 - Paper 1
Question 6
What is a role of the kidney in the excretory system of mammals? (A) To remove salt from the body and to keep water in the body (B) To remove water from the body a... show full transcript
Worked Solution & Example Answer:What is a role of the kidney in the excretory system of mammals? (A) To remove salt from the body and to keep water in the body (B) To remove water from the body and to keep salt in the body (C) To remove nitrogenous waste from the body and to maintain water levels in the body (D) To remove water from the body and to maintain levels of nitrogenous substances in the body - HSC - SSCE Biology - Question 6 - 2009 - Paper 1
Step 1
To remove nitrogenous waste from the body and to maintain water levels in the body
Answer
The primary role of the kidneys in mammals is to filter blood, removing nitrogenous waste products (such as urea) generated from protein metabolism. In addition, the kidneys help maintain homeostasis by regulating water levels and electrolytes in the body. This dual function of waste removal and hydration balance is essential for overall health.