Explanation:

• Based on the nature of the habitat -whether it is water (or very wet areas) or it is on veiy diy areas -a succession of plants is called hydrarch or xerarch, respectively. Hydrarch succession takes place in wet areas and the successional series progress from hydric to the mesic conditions. It takes years for the climax to be reached. All succession whether taking place in water or on land, proceeds to a similar climax community -the mesic (In ecology, a mesic habitat is a type of habitat with a moderate or well-balanced supply of moisture, e.g., a mesic forest, a temperate hardwood forest, or dry-mesic prairie).
• In primary succession in water, the pioneers are the small phytoplankton, which is replaced with time by rooted-submerged plants, rooted-floating angiosperms followed by free-floating plants, then reed swamp, marsh-meadow, scrub and finally the trees. The climax again would be a forest. With time the water body is converted into the land.