Question

In successive seral stages, there is

• A. change in biodiversity
• B. decrease in number of species
• C. decrease in total biomass
• D. maintained equilibrium among organisms

Answer 1

The correct option is A change in biodiversity

Seral stage represents the individual transitional community during succession. A change in the biodiversity of species, an increase in the number of species and organisms and an increase in the total biomass are observed in successive seral stages in a given area.

For e.g., during the first two years of succession in a forest, grasses and herbaceous plants will be abundant. After a few more years, shrubs will start to appear and about six to eight years after clearing, the area is likely to be crowded with young trees.