The sequence of communities of primary succession in water is:
a. phytoplankton, sedges, free-floating hydrophytes, rooted hydrophytes, grasses and trees.
b. phytoplankton, free-floating hydrophytes, rooted hydrophytes, sedges, grasses and trees.
c. free-floating hydrophytes, sedges, phytoplankton, rooted hydrophytes, grasses and trees.
d. phytoplankton, rooted submerged hydrophytes, floating hydrophytes, reed swamp, sedges, meadow and trees.
The answer is the option (d) phytoplankton, rooted submerged hydrophytes, floating hydrophytes, reed swamp, sedges, meadow, and trees.