Question

In the grasslands, trees do not replace the grasses as a part of an ecological succession because of

(a) limited sunlight and paucity of nutrients

(b) water limits and fire

(c) insect and fungi

(d) None of the options

Answer 1

(b) water limits and fire

Grass ecosystems are an early stage of succession in regions where the mature ecosystems are forests. However, grass ecosystems are climax ecosystems in grassland regions, where there is not enough rainfall to support a forest. Due to limiting factors such as water scarcity and forest fire, a grassland ecosystem changes to a desert ecosystem.