Q6. What is the role of nitrifying bacteria in the nitrogen cycle?
- A. Convert ammonia into nitrates
- B. Fix atmospheric nitrogen
- C. Release nitrogen gas into the atmosphere
- D. Decompose organic matter
Sign in to save your score and view detailed explanations
Sign In FreeMore Sets — Ecosystem
Access our comprehensive suite of tools designed to help you master Biology and ace your medical entrance exam.
Previous Chapter
Chemical Coordination And Integration
Next Chapter
Evolution
Explore individual Biology questions →
5,000+ questions with detailed solved answers in our Question Bank
This page provides a free online MCQ test for NEET Biology preparation, focusing specifically on the chapter Ecosystem. 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, Organisms, Nitrogen, Fixation, Secondary, and Consumer.
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.
+ 5 more questions in the actual test
Yes, all our chapter-wise practice sets are 100% free. You can practice as many times as you want without any hidden charges.
Absolutely. Our content team regularly updates the question bank to strictly align with the latest NTA NEET syllabus and NCERT textbooks.
Yes, once you submit the test, you will get an instant scorecard along with the correct answers and detailed explanations for every question.
TopperSquare is India's most advanced, student-centric learning platform designed specifically for medical and engineering aspirants. Our mission is to democratize high-quality education by providing premium practice materials, deep performance analytics, and structured test series.
Whether you are starting your preparation or giving final touches before the exam day, TopperSquare equips you with the right tools—from chapter-wise tests to full-length mock exams—to help you achieve your dream rank.
Looking to strengthen other areas of your preparation? Check out our free chapter-wise question banks for all NEET subjects:
Why 32,000+ students choose TopperSquare
15,000+ Chapter MCQs
Physics, Chemistry, Biology — chapter-wise, topic-wise practice
AI Performance Analytics
Know your weak topics. Get a personalised study plan.
Full NEET Mock Tests
180 questions, timed, with detailed score analysis
PYQ Sets 2010–2024
15 years of past papers with solved explanations
No credit card · 30-second signup · Free forever plan included