BrainIt

Biology

Excretory Products and their Elimination

Nitrogenous waste types, the human excretory system, nephron structure, urine formation, the counter-current mechanism, and hormonal regulation by ADH and RAAS are the core. Mechanism questions dominate: trace what happens along the nephron or when a hormone level shifts.

Exam rules change between cycles. Confirm dates, syllabus and pattern against NTA's official site. We are not NTA.

Weightage: what the paper actually did

Excretory Products and their Elimination carried 2 questions in the NEET 2026 paper. One paper is a data point, not a destiny: NTA moves weight between chapters every cycle, which is why the weightage tables deserve care. The stable facts are the paper's shape: 180 questions, 720 marks, +4 right, −1 wrong.

Sample PYQs from this chapter

Real questions NTA asked from Excretory Products and their Elimination, with the answer and the working. Try before you peek.

Question 1 · NEET 2026

The JGA (Juxta Glomerular Apparatus) is a special sensitive region formed by cellular modifications in _______ related to the same nephron.
  1. A.Distal convoluted tubule and efferent renal arteriole
  2. B.Proximal convoluted tubule and efferent renal arteriole
  3. C.Proximal convoluted tubule and afferent renal arteriole
  4. D.Distal convoluted tubule and afferent renal arteriole
Answer and explanation

Answer: D

The juxtaglomerular apparatus forms at the point of contact where the distal convoluted tubule (macula densa) touches the afferent arteriole (juxtaglomerular cells) of the same nephron. Therefore the correct pairing is distal convoluted tubule and afferent renal arteriole, option 4.

How to practise Excretory Products and their Elimination

Chapter by chapter, against real past-paper questions, on a screen: NEET is computer based from 2027. Read the chapter once, then attempt its PYQs until your accuracy stops climbing, and let the wrong answers tell you which lines to reread. If the chapter keeps refusing to stick, that has its own guide. There is also a free 12-question mock on the exam screen.

Nearby Biology chapters

Questions

How many questions did Excretory Products and their Elimination have in NEET 2026?

Excretory Products and their Elimination carried 2 questions in the NEET 2026 paper. Weightage shifts between cycles, so treat it as a probability, not a promise.

Where can I practise Excretory Products and their Elimination PYQs for NEET?

In the BrainIt app, free until the 2027 exam: its bank holds 50,000 past NTA questions tagged to all 83 chapters, including this one, with accuracy tracked per chapter. A sample question from this chapter is on this page.

Is Excretory Products and their Elimination important for NEET 2027?

It is part of the Biology syllabus the paper draws from, and NEET 2027 is computer based, so practise it on a screen. Your own accuracy in the chapter matters more than any weightage table: a heavy chapter you already score well on needs less time than a light one you keep missing.

Something here wrong or out of date? Email [email protected] and a person will read it.