Respiration in Plants Class 10

Respiration in Plants 

The energy produced in plants by respiration is utilized in growth and life functions.

Location Of Respiration in Various parts of plants

• In leaves, respiration occurs through diffusion of oxygen through stomata into the cells of the leaf.
• In roots, Respiration occurs by diffusion from air present in soil particles to the roots.
• In stems, Respiration occurs through small pores present in the stems called lenticels.

Also check- Respiration in Animals

Exchange of Gasses In Plants

Exchange of Gases In Leaves

• In leaves, gaseous exchange takes place by diffusion of oxygen through stomata into the cells of the leaf. 
• Stomata are the aerating pores present on the epidermis of the leaf. 
• The direction of diffusion mainly depends upon environmental conditions and requirements of Plants.
• During daytime, when photosynthesis occurs, carbon dioxideis rapidly used up,while oxygen release is the major event.
• Thus, the net gas exchange in leaves during day time is: 0₂ diffuses in; CO₂ diffuses out.
• On the other hand during night, elimination of carbon dioxide takes place. Thus, the net gas exchange in leaves at night is O₂ diffuses in; CO2 diffuses out.

Also Check – Importance of Respiration

Exchange of Gases In Roots

• Exchange of gasses in the roots of a plant takes place by  the process of diffusion from the air
• of diffusion from the air present in between soil particles.
  
• Oxygen diffuses into the root hair and passes into the root cells, from where carbon dioxide moves out into the soil.

Also Check – Human Respiratory System Diagram 

Exchange of Gases In Stems

• In woody plants, gaseous exchange occurs through the small pores found on stems called lenticels. 
• On the other hand, in herbaceous plants, stomata on the stem aids in exchange of respiratory gasses.