Class 11 · Excretory Products and Their Elimination

Micturition and Urine Characteristics — NEET Biology

🔥 Predicted for NEET 2027
📖 NCERT Source

The process of release of urine is called micturition and the neural mechanisms causing it is called the micturition reflex. An adult human excretes, on an average, 1 to 1.5 litres of urine per day. The urine formed is a light yellow coloured watery fluid which is slightly acidic (pH-6.0) and has a characteristic odour. On an average, 25-30 gm of urea is excreted out per day. Various conditions can affect the characteristics of urine. Analysis of urine helps in clinical diagnosis of many metabolic disorders as well as malfunctioning of the kidney. For example, presence of glucose (Glycosuria) and ketone bodies (Ketonuria) in urine are indicative of diabetes mellitus.

NCERT Biology · Class 11 · Chapter 16 · Paragraph 35
Why This May Be Tested in NEET 2027

Adjacent to a frequently-asked paragraph in the same chapter.

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QuestionPredicted for NEET 2027

[NEET 2020] Presence of which of the following conditions in urine are indicative of Diabetes Mellitus?

📖 Solution & NCERT Explanation
View solution & NCERT explanation

Correct answer: A Ketonuria and Glycosuria

Ketonuria and Glycosuria (glucose in urine) are classic signs of uncontrolled diabetes mellitus, reflecting high blood glucose and impaired insulin function.

❓ Frequently Asked Questions
What does NCERT say about process release urine called?
The process of release of urine is called micturition and the neural mechanisms causing it is called the micturition reflex. An adult human excretes, on an average, 1 to 1.5 litres of urine per day.
Has this concept appeared in NEET?
High probability for NEET 2027. Adjacent to a frequently-asked paragraph in the same chapter.
Which chapter is this from?
Excretory Products and Their Elimination, Class 11 NCERT Biology.

Through deep analysis of NEET and NTA, 176 of the 180 ReNEET 2026 (June 21) questions were already in the MedicNEET question bank before the exam.

176/180
of the ReNEET 2026 paper (all subjects) was already in the MedicNEET question bank

MedicNEET's Biology question bank is built from the same NCERT lines NTA picks repeatedly. Not random MCQs — questions crafted exactly like NTA crafts them.

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