Question

An abandoned garden has been cleared of all vegetation and only a layer of nutrient-poor soil remains. Which of the following will most likely be observed in the garden area first?

Answer 1

Pioneer species, like bacteria and lichens, will colonize the clearing first and help create soil for other plants. Grasses and other species that can grow in thin, poor soil will be the first plants to appear, improving the soil and allowing shrubs and trees to eventually take over.

Step-by-step explanation:

The first species to colonize a disturbed area such as this are called pioneer species. They change the environment and pave the way for other species to come into the area. Pioneer species are likely to include bacteria and lichens that can live on bare rock. Once soil begins to form, plants can move in. At first, the plants include grasses and other species that can grow in thin, poor soil. As more plants grow and die, organic matter is added to the soil. This improves the soil and helps it hold water. The improved soil allows shrubs and trees to move into the area.