How are red algae adapted to conditions at sea?

Red algae posses

Red algae are able to grow deep in sea as

Red algae do not have

Plants of this group are diploid and well adapted to extreme conditions. They grow bearing sporophylls in compact structures called cones. The group in reference is

Plants of this group are diploid and well adapted to extreme conditions. They grow bearing sporophylls in compact structures called cones. The group in reference is

Plants of this group are diploid and well adapted to extreme conditions. They grow bearing sporophylls in compact structures called cones. The group in reference is

How are plants adapted to water scarcity?

How do snails, seeds, bears, zooplanktons, fungi and bacteria adapt to conditions unfavourable for their survival ?

How do snails, bears, zooplanktons, fungi and bacteria adapt to conditions unfavorable for their survival ?

An edible red algae is