alleryThe structural and functional unit of the kidney is the
ANephron
BAlveolus of the lung
CNeuron of the brain
DStoma of the leaf
Answer & Solution
Correct answer: A. Nephron
1. The chapter section on kidney structure introduces the nephron.
2. Each kidney has about a million nephrons.
3. Alveolus, neuron and stoma are units of other systems.
4. So option A is correct.
_Source: Selina Concise Biology Class 10, Ch 8 The Excretory System (Mistral OCR'd PDF), section on nephron_
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