Plants help clean the air by absorbing pollutants and carbon dioxide through their leaves in photosynthesis. They then release oxygen, improving air quality. Some plants can also absorb harmful toxins from the air, such as formaldehyde and benzene, making the air healthier to breathe.

MCQs

1. What do plants release into the air that helps humans and animals breathe?

A) Carbon dioxide
B) Oxygen
C) Nitrogen
D) Hydrogen

 

2. Which part of the plant is most involved in the process of cleaning the air?

A) Roots
B) Flowers
C) Leaves
D) Stems

 

3. How do plants help reduce pollutants in indoor environments?

A) By generating heat
B) By absorbing toxins through their leaves
C) By making noise
D) By reflecting sunlight

 

4. What is one-way plants can help reduce the effects of climate change?

A) By increasing humidity
B) By shading buildings
C) By absorbing excess carbon dioxide
D) By producing waste

 

5. Which process do plants use to convert carbon dioxide and water into glucose and oxygen?

A) Respiration
B) Photosynthesis
C) Transpiration
D) Fermentation

 

Fill  in The Blanks

Choose from these words: carbon dioxide, and transpiration.

1. Plants help clean the air by taking in __________ during photosynthesis and releasing oxygen.

 

2. Plants release moisture into the air through a process called __________.

 

True / False

1. Plants help clean the air by releasing carbon dioxide into the atmosphere (True / False)

 

2.  Plants can help reduce the amount of greenhouse gases in the air (True / False)

 

3. Plants do not affect the levels of pollutants in the air (True / False)

 

4. Plants can only clean the air in indoor environments (True / False)

 

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