Plant Growth and Development - Competency Based & Assertion-Reasoning Questions
Practice questions testing deep understanding of phytohormones, vernalization, and photoperiodism.
Body Fluids and Circulation - Competency Based & Assertion-Reasoning Questions
Practice questions testing deep understanding of cardiac cycle, ECG, and blood coagulation.
Created by Titas Mallick
Biology Teacher • M.Sc. Botany • B.Ed. • CTET (CBSE) • CISCE Examiner
Practice questions testing deep understanding of respiratory volumes, oxygen dissociation, and gas transport.
Q1. The Oxygen Dissociation Curve for Hemoglobin is naturally S-shaped (sigmoid). However, during intense exercise, the active muscles produce large amounts of CO2 and lactic acid, causing the curve to "shift to the right" (Bohr effect). Explain why this rightward shift is a highly beneficial biological adaptation for the exercising muscle.
Q2. Even after you forcefully exhale as hard as you possibly can, your lungs do not collapse, and there is still about 1200 mL of air left inside them. What is the specific biological term for this remaining air, and why is it absolutely essential for survival?
Q3. Assertion (A): Carbon dioxide is primarily transported in the blood by binding to the iron in hemoglobin. Reason (R): Hemoglobin has a much higher affinity for carbon dioxide than for oxygen.
/Class-11/Competency-Based-Questions/5.1_Breathing_and_Exchange_of_Gases_CBQ.mdxPlant Growth and Development - Competency Based & Assertion-Reasoning Questions
Practice questions testing deep understanding of phytohormones, vernalization, and photoperiodism.
Body Fluids and Circulation - Competency Based & Assertion-Reasoning Questions
Practice questions testing deep understanding of cardiac cycle, ECG, and blood coagulation.