Phosphorus Cycle: Incorrect Statements
This solution identifies the statements that are NOT correct regarding the phosphorus cycle in ecosystems.
Statement 2: Organic Phosphates in Minerals
The statement "Organic phosphates exist in various rock and soil minerals" is incorrect. Phosphorus in rocks and soil minerals is predominantly in inorganic phosphate form (e.g., apatite). Organic phosphates are derived from the decomposition of organic matter.
Statement 3: Gaseous Phase of Phosphorus
The statement "Like carbon cycle, phosphorus also has a gaseous phase and can move into far away ecosystems" is incorrect. The phosphorus cycle lacks a substantial gaseous component, differentiating it significantly from the carbon cycle. Phosphorus movement is mainly through geological processes (weathering) and biological processes, with minimal atmospheric transport (mainly dust).
Conclusion
Statements 2 and 3 present inaccurate information about the nature and movement of phosphorus in the environment.
Important Questions from Ecosystem Ecology
- In context of ecosystems, which one of the following is NOT a correct statement?
- Read the following statements
I. According to the Liebig's law of minimum, the growth is regulated by the limited factors i.e., resources in scarcity and not by the resources in abundance.
II. Shelford's law of tolerance states that, only the factors present in excess/abundance can affect the growth, development of an organism or rate of biological process.
III. Shelford's law of tolerance states that, an organism's success is based on a complex set of conditions and that each organism has a certain minimum, maximum, and optimum levels of environmental factor or combination of factors that determine success.
The correct choice is - A species whose impact on an ecosystem is disproportionately large in comparison to its population is called ______ species.
