Class 3 Science Our Body Systems Worksheet 2

Class 3 Science Our Body Systems Worksheet 2

 

Fill in the Blanks (20 Questions)

 

1. The human body has __________ major organ systems.
2. The skeletal system is made up of a __________ of bones.
3. Without the skeleton, the body would be a __________ of flesh.
4. The skeletal system gives __________ to the body.
5. The bones with the help of __________ help the body to move.
6. A human baby is born with __________ bones in its body.
7. An adult has only __________ bones.
8. The nervous system comprises the brain, the __________ and the nerve cells.
9. All our functions are controlled by the __________ through the nerves.
10. Nerves carry messages from different parts of the body to the __________ and from the brain to different parts of the body.
11. The main organs of the excretory system are the __________.
12. The kidneys clean the blood by removing the __________ from it.
13. The waste is passed out of the body as __________.
14. The __________ and skin also help in excretion.
15. Extra water and salt are removed by the lungs in the form of __________.
16. The skeletal system protects all the __________ organs of the body.
17. Nerves are like __________ carrying messages throughout the body.
18. In the course of just one day, blood will pass through your kidneys at an average of __________ times.
19. The excretory system helps our body to get rid of __________.
20. We are able to write, read, talk and remember because of our __________ system.

 

 

Multiple Choice Questions (20 Questions)

 

How many major organ systems does the human body have?

1. a) 8
2. b) 10
3. c) 12
4. d) 15

 

 

What is the skeletal system made up of?

1. a) Muscles
2. b) A framework of bones
3. c) Nerves
4. d) Blood vessels

 

 

How many bones does a human baby have at birth?

1. a) 206
2. b) 250
3. c) 300
4. d) 350

 

 

How many bones does an adult have?

1. a) 300
2. b) 250
3. c) 206
4. d) 180

 

 

Which system gives shape to the body?

1. a) Digestive system
2. b) Skeletal system
3. c) Respiratory system
4. d) Circulatory system

 

 

What controls all our functions through the nerves?

1. a) Heart
2. b) Lungs
3. c) Brain
4. d) Kidneys

 

 

What are the main components of the nervous system?

1. a) Brain, heart, and lungs
2. b) Brain, spinal cord, and nerve cells
3. c) Bones, muscles, and joints
4. d) Kidneys, liver, and stomach

 

 

What is the main function of nerves?

1. a) To pump blood
2. b) To digest food
3. c) To carry messages
4. d) To produce energy

 

 

What are the main organs of the excretory system?

1. a) Lungs
2. b) Heart
3. c) Kidneys
4. d) Brain

 

 

What do the kidneys do?

1. a) Pump blood
2. b) Clean blood by removing waste
3. c) Digest food
4. d) Control movement