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Which of the following statements is inc...

Which of the following statements is incorrect?

A

All the elements present in a sample of earth's crust are also present in a sample of living tissue

B

Relative abundance of carbon and hydrogen with respect to other elements is higher in any living organisms than in earth's crust

C

Living organisms have more nitrogen and oxygen per unit mass than in animate object(e.g. earth crust)

D

Living organisms have more Ca, Mg, Na In them than in animate object

Text Solution

AI Generated Solution

The correct Answer is:
To determine which statement is incorrect among the four given options, we will analyze each statement one by one. ### Step-by-Step Solution: 1. **Analyze Statement 1**: - **Statement**: "All the elements present in the sample of earth crust are also present in the sample of living tissue." - **Analysis**: The earth's crust contains a variety of elements, many of which are also found in living organisms. Key elements such as carbon, nitrogen, oxygen, phosphorus, calcium, and sodium are indeed present in both. - **Conclusion**: This statement is **correct**. 2. **Analyze Statement 2**: - **Statement**: "Relative abundance of carbon and hydrogen with respect to other elements is higher in the living organism than in the earth crust." - **Analysis**: Living organisms are primarily composed of carbon and hydrogen, which are fundamental components of biomolecules like carbohydrates, proteins, and lipids. In contrast, while carbon and hydrogen are present in the earth's crust, their relative abundance is lower compared to living organisms. - **Conclusion**: This statement is **correct**. 3. **Analyze Statement 3**: - **Statement**: "Living organism has more nitrogen and oxygen per unit mass than its animate object or earth crust." - **Analysis**: Living organisms require nitrogen for proteins and oxygen for cellular respiration. The concentration of these elements is indeed higher in living tissues compared to the earth's crust when considering a unit mass. - **Conclusion**: This statement is **correct**. 4. **Analyze Statement 4**: - **Statement**: "Living organism has more calcium, sodium, and magnesium than its animate object or earth crust." - **Analysis**: While living organisms do contain calcium (mainly in bones), sodium, and magnesium, their overall concentrations are lower compared to the earth's crust. For instance, sodium and magnesium are present in trace amounts in the body compared to their abundance in the earth's crust. - **Conclusion**: This statement is **incorrect**. ### Final Answer: The incorrect statement is **Option 4**: "Living organism has more calcium, sodium, and magnesium than its animate object or earth crust." ---
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