Worksheet: Human Body: Organ Systems | Science for Class 3

Name the following

Question 1:

(a) Helps in movement of body organs _____________
(b) Helps in breakdown of food into simple pieces _____________
(c) Framework of bones _____________
(d) Helps circulation of digested food and oxygen in body _____________
(e) Helps in breathing _____________

MCQs

Question 2: Which of these organs controls all other organs of the body?
(a) Brain
(b) Kidneys
(c) Heart
(d) Stomach

Question 3: The sense organ that enables us to feel hot and cold is:
(a) nose
(b) eyes
(c) skin
(d) ear

Question 4:  Which system converts food into a form in which it can be absorbed by the body?
(a) Circulatory
(b) Breathing
(c) Digestive
(d) Excretory

Question 5:  Which of these is not a sense organ?
(a) Nerves
(b) Tongue
(c) Skin
(d) Ears

Question 6:  Which of these is not a part of the circulatory system?
(a) Blood
(b) Stomach
(c) Blood vessels
(d) Heart

Question 7:  Which organ system protects the soft organs in our body?
(a) Nervous
(b) Skeletal
(c) Digestive
(d) Muscular

Fill in the blanks

Question 8: 

(a) The five sense organs in our body are _____________, _____________, _____________, _____________ and _____________
(b) The _____________ form a network of tubes which supply food and oxygen throughout the body.
(c) Our facial expression are caused by _____________ .
(d) Air enters the _____________ through the wind pipe.
(e) Breaking down food into tiny simple pieces is called _____________ of food.

True & False

Question 9: 

• The brain is the control system of our body.
• Muscles and bones together enable us to move our body parts.
• A group of tissues form a cell.
• We can see with our eyes without the help of the brain.
• Blood continuously takes nutrients and gases to all parts of our body.

Answer the following questions in brief.

Question 10:  What gives shape to our body?

Question 11: List the organs of the nervous system and write its function.

Question 12: What is the role of excretory system in the body?

Question 13: How are the delicate organs like lungs and heart in our body protected from injury?

Question 14: Name the materials that the circulatory system takes from one place to another in the body.

Question 15: Write the correct matching number below each picture.
(a) The Breathing System
(b) The Circulatory System
(c) The Digestive System
(d) The Excretory System
(e) The Nervous System