The adaptations of Seaweed?

Question

Can anyone please tell me the adaptations of seaweed? Thanks in advance

Answer 1

Adaptations for what?

for dealing with dessication - they secrete gelatinous polycharrides that helps to retain water.

for reproduction? - they release gametes into the water synchronously in response to light, temperature, or tides to increase the fertilization rate

for not being buried in sediment? - they produce air bladders (called pneumatophores) to keep them floating

against predation? - some produce noxious chemicals or armor themselves with calcium carbonate