Q. Consider the following statements succession of plants:
1.Hydrarch succession takes place in wet areas and the successional series progress from hydric to the mesic conditions.
2.xerarch succession takes place in dry areas and the series progress from xeric to mesic conditions.
Which of the statements given above is/are correct?

[A] 1 only

[B] 2 only

[C] Both 1 and 2

[D] Neither 1 nor 2

Answer: C
Notes:

Explanation: Based on the nature of the habitat – whether it is water (or very wet areas) or it is on very dry areas – 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.
  • As against this, xerarch succession takes place in dry areas and the series progress from xeric to mesic conditions.
  • Hence, both hydrarch and xerarch successions lead to medium water conditions (mesic) – neither too dry (xeric) nor too wet (hydric).

Source: Science NCERT