Which of the following succession starts with the colonization of phytoplankton in the water?
(a) Hydrarch succession
(b) Xerarch succession
(c) Biological succession
(d) Ecological succession
This question was addressed to me in an interview for internship.
The question is from Ecosystem in portion Ecosystem of Biology – Class 12
The correct option is (a) Hydrarch succession
Easiest explanation: The sequence of successional stages occurring in water is known as hydrarch succession or hydrosere. It usually starts with the colonization of small phytoplanktons. These organisms act as the pioneering species in hydrosere.