Ecological Succession
Biology ⇒ Ecology and Environment
Ecological Succession starts at 9 and continues till grade 12.
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See sample questions for grade 11
Describe how disturbances such as fire can benefit an ecosystem through succession.
Describe how human intervention can alter the course of ecological succession.
Describe the main difference between primary and secondary succession.
Describe the role of animals in the process of ecological succession.
A glacier retreats, exposing bare rock. Which type of succession will occur? (1) Primary succession (2) Secondary succession (3) Tertiary succession (4) No succession
A pond is gradually filled with silt and becomes a meadow. What type of succession is this an example of? (1) Primary succession (2) Secondary succession (3) Aquatic succession (4) Retrogressive succession
Which of the following is a likely outcome if a climax community is disturbed by a natural disaster? (1) The area will remain barren forever (2) Primary succession will begin (3) Secondary succession will begin (4) No change will occur
A volcanic eruption creates a new island with no existing life. Over several decades, the following sequence of communities is observed: (1) Lichens and mosses, (2) Grasses and small herbs, (3) Shrubs, (4) Pine trees, (5) Oak and maple trees. Based on this scenario, explain the processes that drive the transition from one community to the next.
A glacier retreats, exposing bare rock. Which type of succession will occur? (1) Primary succession (2) Secondary succession (3) Tertiary succession (4) No succession
A pond is gradually filled with silt and becomes a meadow. What type of succession is this an example of? (1) Primary succession (2) Secondary succession (3) Aquatic succession (4) Retrogressive succession
Which of the following best describes a climax community? (1) A community in the early stages of succession (2) A stable, mature community with little change in species composition (3) A community with only pioneer species (4) A community that is always changing rapidly
Which of the following best describes primary succession? (1) Succession that occurs on newly exposed surfaces where no soil exists (2) Succession that occurs in areas where a disturbance has destroyed a community but left the soil intact (3) Succession that occurs in aquatic environments (4) Succession that occurs only in forests
Fill in the blank: In aquatic succession, a pond may eventually become a __________ due to the accumulation of sediments.
Fill in the blank: The final, stable community that forms at the end of succession is called the __________ community.
Fill in the blank: The first organisms to colonize a barren environment during succession are called __________ species.
Fill in the blank: The gradual replacement of one plant community by another is known as __________ succession.
True or False: A climax community is always permanent and never changes.
True or False: All ecosystems eventually reach a climax community.
True or False: Human activities can initiate secondary succession.
True or False: Lichens contribute to soil formation during primary succession.
