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Biology · 2022 · 2 marks
CBSE 2022 · Region 1 · Set 1 · Q6
The histogram given below representing the data for annual shark harvest in the great barrier reef / coral reef located on the east coast of…
The histogram given below representing the data for annual shark harvest in the great barrier reef / coral reef located on the east coast of Queensland, Australia. Study the histogram and answer the questions that follow.
(a)
Write your interpretation of the data given.
(b)
Write the impact on the biodiversity of the area that you can interpret on the basis of given data.
OR "Stability of community depends upon its species richness." How did David Tilman show this experimentally ?
Marking-scheme solution
(a) Shark harvest increases over the years from $\displaystyle 1992$ to 2003.
(b) Biodiversity decreases due to over exploitation/ excessive harvesting OR Tilman conducted experiments in out door plots, plots with more species shows less year to year variation in biomass (more stability).
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