Body Fluids Quiz - CBSE Class 12 Biology

Free practice quiz: Body Fluids (CBSE Class 12 Biology). 18 multiple-choice questions with answers and explanations. Play online, no sign-up needed.

This CBSE Class 12 Biology practice quiz has 18 multiple-choice questions on Body Fluids, and 18 of them come with an explanation. Try the 5 sample questions below (tap an option to check yourself), then play the full quiz online. No sign-up needed.

Sample questions

1. Which of the following is NOT a component of blood plasma?

   1. Water
   2. Proteins
   3. Electrolytes
   4. Hemoglobin
   Show answer

   Answer: D. Hemoglobin

   Hemoglobin is the oxygen-carrying pigment found in red blood cells, not in the plasma.

2. Which protein in blood plasma is responsible for blood clotting?

   1. Albumin
   2. Globulin
   3. Fibrinogen
   4. Hemoglobin
   Show answer

   Answer: C. Fibrinogen

   Fibrinogen is a key protein involved in the coagulation cascade leading to blood clot formation.

3. How does the lymphatic system contribute to the body's defense mechanisms?

   1. It transports oxygen to cells
   2. It filters waste products from the blood
   3. It produces hormones
   4. It contains lymphocytes that fight infections
   Show answer

   Answer: D. It contains lymphocytes that fight infections

   The lymphatic system is crucial in the immune response, containing lymphocytes that target and destroy pathogens.

4. Discuss the mechanisms involved in regulating blood volume and composition.

   1. Blood volume is regulated solely by the kidneys.
   2. Multiple hormonal and neural mechanisms regulate blood volume and composition, including the renin-angiotensin-aldosterone system and antidiuretic hormone.
   3. Blood volume is primarily regulated by the heart.
   4. There is no mechanism to regulate blood volume.
   Show answer

   Answer: B. Multiple hormonal and neural mechanisms regulate blood volume and composition, including the renin-angiotensin-aldosterone system and antidiuretic hormone.

   Blood volume and composition are tightly regulated through complex interactions involving kidneys, hormones (ADH, RAAS), and the nervous system.

5. Discuss the interplay between the endocrine system and the body fluid regulatory mechanisms, focusing on the roles of ADH and the renin-angiotensin-aldosterone system (RAAS).

   1. The endocrine system plays no role in fluid regulation.
   2. ADH and RAAS are antagonistic; ADH promotes water retention, while RAAS promotes water excretion.
   3. ADH and RAAS both regulate fluid balance, but through different mechanisms; ADH primarily controls water reabsorption, while RAAS regulates sodium and water balance through effects on the kidneys.
   4. ADH and RAAS are both involved in blood pressure regulation but not fluid regulation.
   Show answer

   Answer: C. ADH and RAAS both regulate fluid balance, but through different mechanisms; ADH primarily controls water reabsorption, while RAAS regulates sodium and water balance through effects on the kidneys.

   ADH (antidiuretic hormone) increases water reabsorption in the kidneys, while the RAAS (renin-angiotensin-aldosterone system) regulates sodium and water balance, affecting blood volume and pressure.

More questions in this quiz

Answers and explanations are in the full quiz.

1. What is the primary function of blood?
2. What is the approximate percentage of water in blood plasma?
3. What is serum?
4. Explain the role of blood buffers in maintaining blood pH.
5. Describe the composition and functions of lymph.
6. What is the role of albumin in maintaining blood osmotic pressure?
7. Explain the process of edema formation and its relation to blood pressure and lymphatic function.
8. Compare and contrast the functions of blood and lymph.
9. Explain the significance of electrolyte balance in maintaining body fluid homeostasis.
10. Analyze the pathophysiological mechanisms underlying conditions such as hypertension and edema, emphasizing the role of body fluid dynamics.
11. Critically evaluate the diagnostic and therapeutic approaches for disorders related to fluid and electrolyte imbalances, including dehydration, hyponatremia, and hyperkalemia.
12. Explain how different physiological processes, such as respiration, sweating, and renal function, contribute to the regulation of body fluid osmolality and pH.
13. Integrate the concepts of fluid compartments, membrane transport mechanisms, and hormonal regulation to explain the maintenance of fluid balance across different body compartments.

More quizzes

• Digestion▶ Play
• Respiration▶ Play

Browse all Human Physiology quizzes

More to play