3
Question
The data given in the table shows species richness of mosses, shrubs and trees calculated for one hectare (10,000m2) of land every 50 years for 200 years based on a long running ecological study.
Year Mosses Shrubs Trees 1800 16 2 0 1850 21 7 4 1900 10 5 3 1950 13 12 6 2000 17 28 14
The ecological process occurring according to the data is
The data given in the table shows species richness of mosses, shrubs and trees calculated for one hectare (10,000m2) of land every 50 years for 200 years based on a long running ecological study.
| Year | Mosses | Shrubs | Trees |
| 1800 | 16 | 2 | 0 |
| 1850 | 21 | 7 | 4 |
| 1900 | 10 | 5 | 3 |
| 1950 | 13 | 12 | 6 |
| 2000 | 17 | 28 | 14 |
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Solution
The correct option is B Succession
The process of change in ecological community of an area over time which in turn results in the formation of climax community is termed as succession. The direction and predictable change in the community lead to alteration of the environment. Now the changing environment leads to altered species composition and structure. In given data, the year 1800 has only mosses and shrubs and with the passage of time, the number of shrubs and tree species increased. Therefore, the correct answer is option B.
The process of change in ecological community of an area over time which in turn results in the formation of climax community is termed as succession. The direction and predictable change in the community lead to alteration of the environment. Now the changing environment leads to altered species composition and structure. In given data, the year 1800 has only mosses and shrubs and with the passage of time, the number of shrubs and tree species increased.
Therefore, the correct answer is option B.
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