AP BIOLOGY

Detailed explanation-1: -Lichens are considered as pioneer species in primary succession on rocks because they can easily grow on rocks where other plants cannot grow. They produce oxalic acid which induced the weathering of rocks and thus soil is formed.

Detailed explanation-2: -Pioneer communities help enrich the soil. As generations of the mosses or lichens die, their remains decompose and are added to the soil. The soil is then able to support a greater variety of plant life.

Detailed explanation-3: -The primary succession is important in pioneering the area to create conditions favorable for the growth of other forms of plants and animals. It paves the way for the next successions as the previously thriving organisms could become an essential component of the soil.

Detailed explanation-4: -The role of a pioneer species in primary succession is to change a bare habitat into one that is suitable for other organisms. A species that is responsible for primary succession in an ecosystem is most likely able to do what?

Detailed explanation-5: -Primary succession and pioneer species Primary succession occurs when new land is formed or bare rock is exposed, providing a habitat that can be colonized for the first time.