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

Correct Answer: c) Water limits and fire

Explanation: In grasslands, trees do not replace grasses as part of ecological succession primarily due to two key factors: limited water availability and frequent fires. Grasslands typically exist in regions where water is insufficient to support the growth of large trees. Grasses are well-adapted to survive in such conditions because they require less water compared to trees.

Additionally, grasslands are often subject to periodic fires, which prevent the establishment and growth of trees. Grasses can quickly regenerate after fires due to their underground root systems, whereas trees are more vulnerable to fire damage. These factors together maintain the dominance of grasses in grassland ecosystems and prevent trees from taking over.