GASEOUS EXCHANGE THEORY & QUESTION ANSWERS Chapter # 13

GASEOUS EXCHANGE

All living organisms require energy to perform various activities. They obtain energy by ATP. The continuous supply of ATP is made possible through respiration. Thus living organisms are always in need of gaseous exchange.

GASEOUS EXCHANGE IN PLANT:
Plants perform gaseous exchange during two processes.

• Photosynthesis
• Respiration

Gaseous Exchange

 Gaseous Exchange - Short Questions Answers Biology - XI

Chapter # 13 Short Questions Answers

Section IV - Functional Biology

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BOTANY PART

Q.1: Describe Photorespiration in Plants?

Ans: Photorespiration in Plants:

• When plants use oxygen and release CO₂ during day time, in the presence of sunlight, it is called photorespiration.
• Photorespiration occurs in special plants during hot and dry days, such plants are called C₃ plants, for example wheat, rice, sugarcane.