DENDROLOGY

Detailed explanation-1: -The oxygen in soil particles diffuses into root hair and reaches all of the root’s cells, where it is used in respiration. Diffusion allows carbon dioxide created in the root’s cells during breathing to escape through the same root hair.

Detailed explanation-2: -Diffusion is the process whereby gases move from an area of high pressure to low pressure. This includes during-Internal respiration-this is the movement in the internal tissues between cells and capillaries, and-External respiration-when gas is exchanged between the alveoli and lung capillaries.

Detailed explanation-3: -Root growth respiration is the part used to provide energy for growing roots and new tissues. Rhizospheric respiration is the respiration of microbes living in the rhizosphere-the soil zone around roots-where roots influence biological and chemical activities.

Detailed explanation-4: -Gas exchange is the physical process by which gases move passively by diffusion across a surface.