Human Body : MCQ Questions for Grades 9 - 12

Students in Papua New Guinea must understand the functions of the human body because this knowledge helps them take care of their health, make informed lifestyle choices, and understand how their bodies grow, heal, and respond to illness. Learning how major organs and body systems work is a key part of the science curriculum and builds a strong foundation for future studies in health, biology, nursing, and other medical-related fields that are important for national development. These questions are helpful for examinations because they test students’ understanding, recall, and application of basic scientific concepts in a clear and structured way, similar to how exam questions are set. They also help students practise reading different question styles, improve their confidence, and prepare them to answer multiple-choice questions accurately under exam conditions.

How to take answer these questions

• Choose the correct answer by clicking on the round radio button on the left
• Click on Next for next question.
• Final scores and marking results will be displayed at the end.

 

1. Which organ is mainly responsible for pumping blood throughout the body?

Lungs
Brain
Heart
Kidneys

2. The function of the lungs is best described as helping the body to:

Digest food
Exchange oxygen and carbon dioxide
Control movement
Store energy

3. How many bones are there in the adult human body?

106
206
306
406

4. The brain and spinal cord together form the:

Circulatory system
Digestive system
Nervous system
Muscular system

5. Which part of the eye controls the amount of light that enters?

Retina
Pupil
Lens
Cornea

6. Blood cells that help fight infections are called:

Red blood cells
Platelets
White blood cells
Plasma

7. The stomach is mainly involved in:

Breathing
Circulation
Digestion
Movement

8. Which system of the body allows movement by contracting and relaxing?

Skeletal system
Muscular system
Nervous system
Respiratory system

9. The largest organ in the human body is the:

Brain
Liver
Skin
Lungs

10. Which organ filters waste from the blood and produces urine?

Liver
Kidneys
Bladder
Intestines

11. Oxygen is carried in the blood mainly by:

Plasma
White blood cells
Platelets
Red blood cells

12. The main role of the skeleton is to:

Digest food
Protect organs and support the body
Pump blood
Produce hormones

13. Which part of the body connects muscles to bones?

Ligaments
Cartilage
Tendons
Joints

14. Food nutrients are mostly absorbed into the bloodstream in the:

Stomach
Large intestine
Small intestine
Esophagus

15. The control center of the human body is the:

Heart
Brain
Lungs
Spinal cord

16. Which body system includes the mouth, stomach, and intestines?

Respiratory system
Digestive system
Nervous system
Circulatory system

17. The part of the ear responsible for balance is the:

Eardrum
Cochlea
Auditory canal
Semicircular canals

18. Sweat helps the body mainly by:

Producing energy
Removing oxygen
Cooling the body
Digesting fats

19. Which organ stores urine before it leaves the body?

Kidneys
Urethra
Bladder
Liver

20. Hormones in the body are produced by the:

Nervous system
Skeletal system
Endocrine system
Digestive system