Question

The pioneer species in Xerarch and Hydrarch succession are respectively

• A. Lichens and sedges
• B. Lichens and rooted hydrophytes
• C. Lichens and phytoplanktons
• D. Phytoplanktons and lichens

Answer 1

The correct option is C Lichens and phytoplanktons

• The pioneer species in xerarch and hydrarch succession are lichens and phytoplanktons respectively. Xerarch is a plant succession starting on bare ground or rock and culminating in a mature climax forest. The pioneer species, such as lichens and mosses, result in the gradual accumulation of soil.
• Hydrarch is a plant succession which starts in relatively shallow water, such as ponds and lakes and culminating in a mature forest, e.g. phytoplankton, Hydrilla, Vallisneria.

So, the correct answer is option C.