Category: Samacheer Science Worksheets

Unit I My Body

Fill in the blanks:

1. The j shaped organ found below the lungs is _______________.
2. The heart pumps ___________ to all parts of our body.
3. The human heart is made up of __________________.
4. The heart has ___________ chambers.
5. Stomach contains special juice and enzymes to breakdown ______________ into energy.
6. The kidneys purify _______________.
7. Every day we should brush our teeth ____________ times.
8. A pair of spongy sac like organ is _________________.
9. _________ is an internal organ.
10. The organ that helps us to breath is _________.
11.  An example of an external organ is ___________________.
12.  _____________ are the framework of our body.
13.  The human heart beats about ________ times in a minute.
14. An organ that removes wastes from our body is called as ________.
15. _________ is unfair and unhealthy touch .
16.  We should avoid _________ food to maintain healthy teeth.
17.  Every day we should drink more _________.
18.  __________ are the soft parts that cover our bones.
19.  The longest bone is __________bone.
20.  ___________ teeth are the first set of teeth starts to develop from the age of six months.

Answer Key:

1. Stomach
2. Blood
3. Muscles
4. Four
5. Food
6. Blood
7. Two
8. Lungs
9. Heart
10. Lungs
11.  Stomach
12. Bones
13.  72
14. Kidney
15.  Bad touch
16.  Sugary
17.  Water
18.  Muscles
19.  Thigh
20.  Milk teeth

II. Write true or false:

1. The brain is protected by skull.
   Answer: __________________________
2. The exchange of gases oxygen and carbon dioxide is called as respiration.
   Answer: __________________________
3. Lungs help us to breathe.
   Answer: __________________________
4. We have three lungs in our body.
   Answer: __________________________
5. When we breathe in, the lungs become bigger.
   Answer: __________________________
6. When we breathe out, we give out oxygen from the lungs.
   Answer: __________________________
7. Heart is the commanding centre of our body.
   Answer: __________________________
8. Lungs pump blood to all parts of the body.
   Answer:__________________________
9. Wisdom teeth are essential for human beings.
   Answer: __________________________
10. Head, hand and legs are internal organs.
    Answer: __________________________
11. Heart is made up of muscles.
    Answer:__________________________
12. Muscles are the soft parts that cover our bones.
    Answer:__________________________
13. Brush your teeth once a day.
    Answer: __________________________
14. Father patting you on your head is a good touch.
    Answer: __________________________
15. Kidney purifies blood.
    Answer: __________________________
16. The cerebrum, cerebellum and the brain stem are the three main parts of the human brain.
    Answer: __________________________
17. Neem twigs are good for oral health.
    Answer: __________________________
18. We should avoid sugary food.
    Answer: __________________________
19. Shout when you receive bad touch.
    Answer: __________________________
20. Bad touch is unsafe touch.
    Answer: __________________________