tamil-nadu-class-6 · Science
Practice — Human Organ Systems
Answer 6 questions, get instant scoring with explanations. Auto-saves your attempt.
6 questions7 total marks8m estimated
Question 1 of 6
⏱ 08:00
The main organ of respiration in humans is the ____.
0 of 6 answered
Take the next step
Sign in to save attempts to your dashboard and track your accuracy over time
Pair self-study with a tutor, a live course or a coaching centre.
