Respiratory, Circulatory and Excretory Systems Practice Questions
20 free Respiratory, Circulatory and Excretory Systems practice questions for the Zoology, each with the correct answer and a detailed explanation. Open any question below, or take the full set as an interactive quiz.
Questions
20 questions
All Respiratory, Circulatory and Excretory Systems questions
- Q1. The primary function of the respiratory system is to:
- Q2. In humans, gas exchange occurs mainly in the:
- Q3. Hemoglobin is primarily responsible for transporting:
- Q4. Which blood vessel carries oxygenated blood from the lungs to the heart?
- Q5. The main pumping chamber of the human heart is the:
- Q6. Which component of blood is involved in clotting?
- Q7. The circulatory system primarily helps in:
- Q8. Which structure prevents backflow of blood in the heart?
- Q9. Carbon dioxide is mainly transported in blood as:
- Q10. The basic functional unit of the kidney is the:
- Q11. Which process occurs in the glomerulus of the nephron?
- Q12. The main nitrogenous waste excreted in humans is:
- Q13. Which hormone regulates water reabsorption in kidneys?
- Q14. Which blood vessel carries deoxygenated blood from body tissues to the heart?
- Q15. Breathing is controlled by the respiratory center located in the:
- Q16. Which component of blood provides immunity?
- Q17. Selective reabsorption of glucose mainly occurs in the:
- Q18. Which structure separates the right and left sides of the heart?
- Q19. The primary role of the loop of Henle is to:
- Q20. Which gas is the main stimulus for breathing in humans?