Question detail
What role do the kidneys play in maintaining water balance in the body?
Try the question, check the answer, then read the explanation to understand the curriculum point.
At a glance
MCQ
Type
practice
Style
Topic
Hormonal coordination in humans
Question
- A. They store excess water
- B. They filter and excrete excess water
- C. They absorb water from the intestines
- D. They produce hormones that regulate thirst
Answer
The correct option is They filter and excrete excess water. This answer is correct because it matches the approved learning objective to describe the kidneys as organs that remove excess water, ions and urea from the blood in urine in the subtopic Maintaining water and nitrogen balance in the body (biology only).
Explanation
The correct option is They filter and excrete excess water. They filter and excrete excess water is correct because it directly supports the approved learning objective to describe the kidneys as organs that remove excess water, ions and urea from the blood in urine. This belongs to the subtopic Maintaining water and nitrogen balance in the body (biology only) within Hormonal coordination in humans, so the explanation must stay tied to that curriculum context. The other options are incorrect because they either do not answer this learning objective, use a vague statement, or move away from Maintaining water and nitrogen balance in the body (biology only).
Common mistake
Misunderstanding Kidney Function
Students often describe the kidneys only as filters without mentioning their role in removing excess water, ions, and urea.
Emphasize that the kidneys not only filter blood but also specifically remove excess water, ions, and urea to produce urine.
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