The correct sequence of plants in a hydrosere is

Options

A. Oak `to` Lantana `to` Scirpus `to` Pistia `to` Hydrilla `to` Volvox
B. Volvox `to` Hydrilla `to` Pistia `to` Scirpus `to` Lantana `to` Oak
C. Pistia `to` Volvox `to` Scirpus `to` Hydrilla `to` Oak `to` Lantana
D. Oak `to` Lantana `to` Volvox `to` Hydrilla `to` Pistia `to` Scirpus

Answer

B

Explanation

The various stages in a hydrosers are well studied in ponds , pools or lakes.
The various stages of hydrosere are
(i) Phytoplanton stage, e.g. some blue - green algae, green algae (Volvox), diatoms and bacteria, etc.
(ii) Rooted submerged stage,stage, e.g. Hydrilla, Vallisneria, etc.
(iii) Floating stage, e.g. species Nelumbo, Nymphaea, etc. Some free floating species are Pistia, Azolla, Lenma, etc.
(iv) Red-swamp stage, e.g. species of Scirpus and Typha.
(v) sedge-meadow stage, e.g. species of Cyperaceae and Gramineae.
Woodland stage, e.g. Lantana, Salix, Populus, etc.
(vii) Forest stage, e.g. Trpical rainforests, mixed forests of Almus, Acer Quercus (oak), tropical deciduous forests.