Question

What would happen if aerial roots were absent in mangroove plants

Answer 1

aerial roots or nematophores are the special structures that are development in mangroves which help in respiration in marshy water
if they are absent it would be difficult for respiration to occur

Answer 2

If aerial roots were absent in mangroove, it will be difficult for the plant to respire in water logged soil.

Mangroove are known for their tolerance against salt and their ability to grow in muddy soil. They have special structures called pneumatophores or aerial roots that grow against the surface of earth. These structures help mangroove plant to respire.