DENDROLOGY

Detailed explanation-1: -In root systems, oxygen (O2) in soil pores diffuses into the root hairs and gets transported to all parts of the roots. Plant roots use photosynthates during respiration for their various functions, like nutrient uptake and maintaining and growing their tissues.

Detailed explanation-2: -Plants, like animals, take in oxygen and give out carbon dioxide during respiration. Only during photosynthesis, plants take in carbon dioxide and release oxygen as a byproduct.

Detailed explanation-3: -Answer: It is a false statement that roots can nothelp plant in respiration. Explanation: Exchange of gases such as oxygen and carbon dioxide also occurs in root of the plants.