Match each ecological succession stage or scenario listed on the left with its corresponding characteristic colonizer or community attribute on the right.
- Pioneer stage of a hydrosereMicroscopic unicellular algae and cyanobacteria colonizing open aquatic environments
- Pioneer stage of a xerosereCrustose lichens secreting organic acids to weather exposed bare rock
- Secondary succession on abandoned farmlandRapid colonization by herbaceous weeds and grasses supported by pre-existing soil
- Climax community stageA stable, highly diverse vegetation structure in dynamic equilibrium with the regional climate
Answer
Pioneer stage of a hydrosere matches with microscopic unicellular algae; Pioneer stage of a xerosere matches with crustose lichens; Secondary succession on abandoned farmland matches with rapid colonization by weeds/grasses supported by pre-existing soil; Climax community stage matches with stable, highly diverse vegetation in dynamic equilibrium with climate.
Each ecological scenario correctly pairs with its characteristic pioneering or climax stage: hydrosere starts with aquatic phytoplankton, xerosere with lichens on bare rock, secondary succession with fast-growing herbaceous plants on pre-existing soil, and the climax community with a stable, mature ecosystem in equilibrium with the climate.
Step-by-Step Solution
Key Concept
Distinct seral stages and pioneer organisms in primary and secondary ecological succession.