Q6. Which process is responsible for the removal of hydrogen ions, potassium ions, and ammonia from the blood into the nephron?
- A. Glomerular filtration
- B. Reabsorption
- C. Tubular secretion
- D. Counter-current mechanism
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This page provides a free online MCQ test for NEET Biology preparation, focusing specifically on the chapter Excretory Products and Their Elimination. It contains 10 carefully selected multiple-choice questions (MCQs) designed to test your conceptual understanding and exam readiness.
Key concepts covered in this specific test include Following, Excretory, Structures, Platyhelminthes, Flatworms, and Statement.
Taking these timed MCQ tests helps you simulate the real NEET exam environment. Detailed step-by-step explanations are provided for every question to help you learn from your mistakes and strengthen your fundamentals.
Which of the following excretory structures is present in Platyhelminthes (flatworms)?
Nephridia
Malpighian tubules
Flame cells
Green glands
Which statement about the Loop of Henle is incorrect?
The descending limb is permeable to water but impermeable to solutes.
The ascending limb actively transports sodium and chloride ions.
The Loop of Henle plays no role in urine concentration.
The Loop of Henle contributes to the counter-current mechanism.
Which part of the nephron is the site for facultative water reabsorption?
Proximal convoluted tubule
Loop of Henle
Distal convoluted tubule
Collecting duct
Which of the following statements about counter-current mechanisms is incorrect?
Counter-current exchange occurs in the Loop of Henle.
Counter-current exchange maintains the medullary gradient.
Counter-current exchange plays no role in water conservation.
The vasa recta helps in counter-current exchange.
What is the main nitrogenous waste product excreted by humans?
Ammonia
Uric acid
Urea
Creatinine
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