Respiration and Circulation
22 Maharashtra HSC Class 12 Biology past-year questions from 5 papers, 2024 to 2026, with answers and worked solutions.
About this chapter
- Difficulty: 15 easy · 7 moderate.
- Most-asked subtopics: Heart (4), Mechanism of Respiration (3), Organs of Respiratory Exchange (3).
- Updated 13 October 2026.
#1Organs of Respiratory Exchange
#2Organs of Respiratory Exchange
#3Organs of Respiratory Exchange
#4Human Respiratory System
#5Human Respiratory System
Done a few? Here’s your next move
#6Mechanism of Respiration
#7Mechanism of Respiration
- Maharashtra HSC Class 12 · 2024 · Q. 31EasyHas image
#8Mechanism of Respiration
#9Common Disorders of Respiratory System
#10Common Disorders of Respiratory System
#11Red Blood Corpuscles
#12White Blood Corpuscles
#13White Blood Corpuscles
- Maharashtra HSC Class 12 · 2024 · Q. 20ModerateHas image
#14White Blood Corpuscles
#15Platelets
#16Heart
#17Heart
#18Heart
#19Heart
#20Working Mechanism of Human Heart
#21Blood Pressure
#22Electrocardiogram