Question

In ecological succession,

• A. Pioneer species move into new communities first
• B. Climax communities have lower total biomass than preceding communities
• C. Species diversity is greatest in the early stages of succession
• D. Climax communities shift constantly
• E. All of the above

Answer 1

The correct option is A Pioneer species move into new communities first

Ecological succession is the process of gradual change in the species structure of an ecological community over time. Pioneer species are the species which are first to colonize at an area and begin a chain of ecological succession that ultimately leads to a more biodiverse steady-state ecosystem. Plants that are first to invade the bare area are called as pioneer species, e.g., lichens (succession on rocks).

Thus, the correct answer is option 'Pioneer species move into new communities first'.