Respiration in organisms Class 7 Notes | EduRev

Created by: Ananthan Balaji

Class 7 : Respiration in organisms Class 7 Notes | EduRev

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Material downloaded from http://myCBSEguide.com and http://onlineteachers.co.in            Page 91 of 183 
                  Portal for CBSE Notes, Test Papers, Sample Papers, Tips and Tricks 
CBSE Worksheet-31 
Class – VII Science (Respiration in Organisms) 
 
1. In insects, air enters the body through 
a. Lungs 
b. Gills 
c. Skin 
d. Spiracles 
2. During exhalation, the ribs move 
a. Upwards 
b. Downwards 
c. Outwards 
d. To normal position 
3. Plants breathe through their stomata located in their 
a. Leaves 
b. Stem 
c. Roots 
d. Flowers 
4. Gills are respiratory organs in 
a. Fish 
b. Cockroach 
c. Amoeba 
d. Earthworm 
5. Match the following 
Column A Column B 
a. Yeast i. Man 
b. Stomata ii. Chest cavity 
c. Larynx iii. Voice box 
d. Diaphragm iv. Alcohol 
e. Lungs v. Plants 
 
 
Page 2


 
 
 
Material downloaded from http://myCBSEguide.com and http://onlineteachers.co.in            Page 91 of 183 
                  Portal for CBSE Notes, Test Papers, Sample Papers, Tips and Tricks 
CBSE Worksheet-31 
Class – VII Science (Respiration in Organisms) 
 
1. In insects, air enters the body through 
a. Lungs 
b. Gills 
c. Skin 
d. Spiracles 
2. During exhalation, the ribs move 
a. Upwards 
b. Downwards 
c. Outwards 
d. To normal position 
3. Plants breathe through their stomata located in their 
a. Leaves 
b. Stem 
c. Roots 
d. Flowers 
4. Gills are respiratory organs in 
a. Fish 
b. Cockroach 
c. Amoeba 
d. Earthworm 
5. Match the following 
Column A Column B 
a. Yeast i. Man 
b. Stomata ii. Chest cavity 
c. Larynx iii. Voice box 
d. Diaphragm iv. Alcohol 
e. Lungs v. Plants 
 
 
 
 
 
Material downloaded from http://myCBSEguide.com and http://onlineteachers.co.in            Page 92 of 183 
                  Portal for CBSE Notes, Test Papers, Sample Papers, Tips and Tricks 
6. Fill in the blanks. 
a. The leaves of plants have small pore called --------------. 
b. The larynx is also called ----------------, 
c. ----------------- respiration takes place in presence of oxygen. 
d. The oxygen carrying components in blood is ------------. 
e. The small thin walled air sacs inside the lungs are called ------------. 
7. Define respiration? 
8. What is residual volume of air? What is its importance? 
9. What are stomata? Write its function?  
10. Name the respiratory organs of following organisms. 
a. Amoeba 
b. Earthworm 
c. Fish 
d. Frog 
e. Insets 
 
 
 
 
 
 
 
 
 
 
 
 
Page 3


 
 
 
Material downloaded from http://myCBSEguide.com and http://onlineteachers.co.in            Page 91 of 183 
                  Portal for CBSE Notes, Test Papers, Sample Papers, Tips and Tricks 
CBSE Worksheet-31 
Class – VII Science (Respiration in Organisms) 
 
1. In insects, air enters the body through 
a. Lungs 
b. Gills 
c. Skin 
d. Spiracles 
2. During exhalation, the ribs move 
a. Upwards 
b. Downwards 
c. Outwards 
d. To normal position 
3. Plants breathe through their stomata located in their 
a. Leaves 
b. Stem 
c. Roots 
d. Flowers 
4. Gills are respiratory organs in 
a. Fish 
b. Cockroach 
c. Amoeba 
d. Earthworm 
5. Match the following 
Column A Column B 
a. Yeast i. Man 
b. Stomata ii. Chest cavity 
c. Larynx iii. Voice box 
d. Diaphragm iv. Alcohol 
e. Lungs v. Plants 
 
 
 
 
 
Material downloaded from http://myCBSEguide.com and http://onlineteachers.co.in            Page 92 of 183 
                  Portal for CBSE Notes, Test Papers, Sample Papers, Tips and Tricks 
6. Fill in the blanks. 
a. The leaves of plants have small pore called --------------. 
b. The larynx is also called ----------------, 
c. ----------------- respiration takes place in presence of oxygen. 
d. The oxygen carrying components in blood is ------------. 
e. The small thin walled air sacs inside the lungs are called ------------. 
7. Define respiration? 
8. What is residual volume of air? What is its importance? 
9. What are stomata? Write its function?  
10. Name the respiratory organs of following organisms. 
a. Amoeba 
b. Earthworm 
c. Fish 
d. Frog 
e. Insets 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Material downloaded from http://myCBSEguide.com and http://onlineteachers.co.in            Page 93 of 183 
                  Portal for CBSE Notes, Test Papers, Sample Papers, Tips and Tricks 
 
Answer key 
 
1. d 
2. b 
3. a 
4. a 
5. (a) – (iv), (b) – (v), (c) – (iii), (d) – (ii), (e) – (i). 
6. (a) Stomata (b) voice box (c) Aerobic (d) hemoglobin (e) alveoli. 
7. The process by which living organism intake oxygen for oxidation of food to obtain 
energy along with carbon dioxide and water is called respiration. 
8. The amount of air that always remains in lungs during inhalation and inhalation is 
called residual volume. It is important for exchange of gases between blood and 
alveoli of lung. 
9. The tiny pores present on leaf surface are called stomata. Through stomata exchange 
of gases and transpiration takes place in plants. 
10. Respiratory organs are: 
a. Cell membrane 
b. Moist skin 
c. Gills 
d. Lungs and skin 
e. Spiracles. 
 
 
 
  
 
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