Question

Fruits stored in a cold chamber exhibit longer storage life because
1. exposure to sunlight is prevented
2. concentration of carbon dioxide in the environment is increased
3. rate of respiration is decreased
4. there is an increase in humidity

Answer 1

Correct Answer - Option 3 : rate of respiration is decreased

The correct answer is rate of respiration is decreased.

• The shelf life of fruits and vegetables can be increased by keeping them in cold storage this results in a slower ripening process and fruits and vegetables remain fresh for a longer duration. 
• Fruits when stored in a cold chamber exhibit a longer storage life because their rate of respiration is decreased. When fruit respires they release out ethylene which helps in ripening. 
• Ethylene is also known as the 'fruit-ripening hormone'. Every fruit has a different level of ethylene production.
• The rate of ethylene production decreases when fruits are kept in cold storage. Thus, the shelf life of fruits increases.