Transport in Humans Quiz - CBSE Class 7 Science

Free practice quiz: Transport in Humans (CBSE Class 7 Science). 20 multiple-choice questions with answers and explanations. Play online, no sign-up needed.

This CBSE Class 7 Science practice quiz has 20 multiple-choice questions on Transport in Humans, and 20 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. What is the main function of blood in the human body?

   1. To transport nutrients and oxygen
   2. To create energy
   3. To store waste materials
   4. To regulate body temperature
   Show answer

   Answer: A. To transport nutrients and oxygen

   Blood primarily functions to transport nutrients and oxygen to different parts of the body while also removing waste products.

2. What role do platelets play in the human body?

   1. Fighting infections
   2. Transporting nutrients
   3. Clotting blood
   4. Carrying oxygen
   Show answer

   Answer: C. Clotting blood

   Platelets are involved in blood clotting, which prevents excessive bleeding when we have injuries.

3. What is the main function of the circulatory system?

   1. To produce digestive enzymes
   2. To transport gases and nutrients
   3. To store fats
   4. To transmit nerve signals
   Show answer

   Answer: B. To transport gases and nutrients

   The circulatory system's primary role is to transport oxygen, carbon dioxide, nutrients, and waste products throughout the body.

4. Which of the following is a property of capillaries in the circulatory system?

   1. Thick muscular walls
   2. Large diameter
   3. Extensive network reaching cells
   4. Direct connections to the heart
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   Answer: C. Extensive network reaching cells

   Capillaries are fine blood vessels that form a network which allows the exchange of nutrients, gases, and wastes with tissues.

5. Which valve prevents backflow of blood from the aorta to the heart?

   1. Bicuspid valve
   2. Tricuspid valve
   3. Pulmonary valve
   4. Aortic valve
   Show answer

   Answer: D. Aortic valve

   The aortic valve prevents the backflow of blood into the left ventricle after it has been pumped into the aorta.

More questions in this quiz

Answers and explanations are in the full quiz.

1. Which component of blood is responsible for transporting oxygen?
2. What is the main function of the heart in the circulatory system?
3. Which blood vessel carries blood away from the heart?
4. Which of the following is responsible for regulating blood pressure?
5. How do white blood cells contribute to the body's defense system?
6. Which organ is responsible for filtering blood in the human body?
7. Why is it important for the circulatory system to maintain homeostasis?
8. What is the function of veins in the circulatory system?
9. How does the blood transport nutrients in the human body?
10. What happens if blood flow to an area of the body is obstructed?
11. What triggers the heartbeat in humans?
12. How are respiratory gases primarily transported in the blood?
13. When blood travels through the pulmonary artery, where is it going?
14. How does the heart's structure prevent the mixing of oxygenated and deoxygenated blood?
15. Why does the heart need its own blood supply through the coronary arteries?

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