Question : In an ecosystem, the vertical distribution of different species occupying different levels is called ____________.
Option 1: levelling
Option 2: grouping
Option 3: ramification
Option 4: stratification
Correct Answer: stratification
Solution : The correct answer is stratification .
Stratification is the vertical distribution of many species occupying various strata. For instance, in a forest, trees occupy the uppermost vertical strata or layer, shrubs the second, and grasses and herbs the lowermost layers.