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Read the following statements and select...

Read the following statements and select the correct option w.r.t cell theory.
(i) All living organisms are composed of cells and products of cells.
(ii) Viruses are exception to cell theory because they are cellular particles.
(iii) All cells arise from pre-existing cells.
(iv) Activities of an organisms are the outcome of sum total of activities and interactions of its constituent cells.
(v) Rudolf Virchow gave final shape to cell theory.

A

All expect (ii)

B

All expect (ii) & (iii)

C

All expect (iii) & (v)

D

All expect (i) & (iv)

Text Solution

AI Generated Solution

The correct Answer is:
To solve the question regarding the statements related to cell theory, let's analyze each statement step by step. ### Step 1: Analyze Statement (i) **Statement (i)**: "All living organisms are composed of cells and products of cells." - This statement is true. The cell theory states that all living organisms are made up of cells, which are the basic units of life. **Hint**: Remember that cell theory emphasizes that cells are the fundamental building blocks of all living organisms. ### Step 2: Analyze Statement (ii) **Statement (ii)**: "Viruses are exceptions to cell theory because they are cellular particles." - This statement is incorrect. Viruses are actually acellular (not made of cells) and do not fit into the cell theory, which applies to cellular organisms. **Hint**: Consider the definition of viruses; they lack cellular structure and cannot be classified as living organisms under cell theory. ### Step 3: Analyze Statement (iii) **Statement (iii)**: "All cells arise from pre-existing cells." - This statement is true. One of the key principles of cell theory is that new cells are produced from existing cells through cell division. **Hint**: Think about how cells reproduce; this principle is foundational in biology. ### Step 4: Analyze Statement (iv) **Statement (iv)**: "Activities of an organism are the outcome of the sum total of activities and interactions of its constituent cells." - This statement is also true. The functions and activities of an organism are indeed a result of the collective activities of its cells. **Hint**: Reflect on how multicellular organisms function; their activities depend on the interactions of many cells. ### Step 5: Analyze Statement (v) **Statement (v)**: "Rudolf Virchow gave final shape to cell theory." - This statement is true. Rudolf Virchow is known for the principle that all cells come from pre-existing cells, which helped solidify the cell theory. **Hint**: Remember the contributions of key scientists in developing cell theory, particularly Virchow's role. ### Conclusion After analyzing all the statements: - Statements (i), (iii), (iv), and (v) are correct. - Statement (ii) is incorrect. Thus, the correct option is: **All statements except (ii)**. ### Final Answer The correct option is: **All except the 2nd statement.**
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