Solution:
Rhizophora has lateral roots arising from underground roots which grow aerotropically and come out the soil to facilitate respiration of underground root system. These roots are called respiratory roots or pneumatophores.
Roots growing against gravitational force are seen in
Rhizophora has lateral roots arising from underground roots which grow aerotropically and come out the soil to facilitate respiration of underground root system. These roots are called respiratory roots or pneumatophores.