Presence of plants arranged into well defined vertical layers depending on their height can be best seen in
(a) tropical savannah
(b) tropical rain forest
(d) temperate forest
(b) Tropical rain forests show stratification. It can be defined as the grouping of plants into two or more well defined layers depending upon their height. These layers are called strata or storeys. There storeys consist of respectively very tall emergent trees, tall trees, small trees, a shrub layer and a ground layer of fens, mosses and herbs.