Online Test — The Human Body: Working Systems
10 Questions • 12 min • Chapter MCQ
12:00
Question 1 of 10
hard
We breathe faster after running because the body needs more…
Water only
Sleep
Oxygen for energy
Salt
Explanation: Hard work needs more oxygen, so we breathe faster.
Question 2 of 10
easy
The organ that controls the whole body and helps us think is the…
Stomach
Brain
Lung
Heart
Explanation: The brain controls the body and lets us think.
Question 3 of 10
easy
Blood carries ___ and food to every part of the body.
Sand
Oxygen
Plastic
Glass
Explanation: Blood delivers oxygen and food to cells.
Question 4 of 10
easy
Teeth help in digestion by…
Smelling
Tasting only
Chewing and breaking food
Pumping blood
Explanation: Teeth break food into small pieces.
Question 5 of 10
medium
The cage of bones that protects the heart and lungs is the…
Jaw
Backbone only
Skull
Rib cage
Explanation: The rib cage shields the heart and lungs.
Question 6 of 10
easy
The organs we breathe with are the…
Bones
Kidneys
Lungs
Eyes
Explanation: We breathe using our lungs.
Question 7 of 10
easy
A group of body parts that work together to do a job is called a…
System
Toy
Game
Song
Explanation: Body parts working together form a system.
Question 8 of 10
medium
A body part that does a special job, like the heart or lungs, is an…
Island
Atom
Orbit
Organ
Explanation: The heart and lungs are organs.
Question 9 of 10
medium
The beating you feel at your wrist is your…
Yawn
Sneeze
Cough
Pulse
Explanation: The pulse shows your heartbeats.
Question 10 of 10
medium
The food pipe carries food from the mouth to the…
Stomach
Lungs
Heart
Brain
Explanation: The food pipe leads to the stomach.