Home
Class 11
BIOLOGY
An exception to cell theory is...

An exception to cell theory is

A

Mycoplasma

B

Pneumococcus

C

Bacteriophage

D

Amoeba

Text Solution

AI Generated Solution

The correct Answer is:
**Step-by-Step Solution:** 1. **Understanding Cell Theory**: The cell theory states that all living organisms are composed of cells, and cells are the basic unit of life. It also states that all cells arise from pre-existing cells. 2. **Identifying Exceptions**: While the cell theory is widely accepted, there are exceptions. One notable exception is viruses, which do not fit the traditional definition of a cell. 3. **Analyzing the Options**: The question provides four options: Mycoplasma, Pneumococcus, Bacteriophage, and Amoeba. We need to determine which of these is an exception to the cell theory. 4. **Evaluating Each Option**: - **Mycoplasma**: These are the smallest known living cells and can reproduce independently. They are not an exception to cell theory. - **Pneumococcus**: This is a type of bacteria that is also a cellular organism. It does not serve as an exception to cell theory. - **Bacteriophage**: This is a type of virus that infects bacteria. Viruses are non-cellular and do not fit the criteria of the cell theory. - **Amoeba**: This is a single-celled organism and is not an exception to the cell theory. 5. **Conclusion**: Among the options provided, Bacteriophage is the only one that is a virus and thus serves as an exception to the cell theory. **Final Answer**: Bacteriophage is an exception to cell theory. ---
Promotional Banner

Similar Questions

Explore conceptually related problems

One of the following is an exception to cell theory

The …………… are an exception to cell theory.

[A] : Viruses are exception to cell theory . [R] : Viruses don't have a defined nucleus and cytoplasm .

Why does viruses form a exception to cell theory?

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.

Read the following statements and choose the option with all correct statement. I. size of a cell depends upon nucleoplasmic index. II. Occurrence of different type of tissues, organs and organ system results in division of labour. III. 'Omnis cellula-e-cellula' was experimentally demonstrated by Negeli. IV. Viruses are an exception to cell theory.

$ Viruses are not an exception to all theory ! During mitosis the number of chromosomes is reduced to a half.

Which of the following is the exception of cell theory

Assertion :- Viruses are exception of cell theory. Reason:- Virus has many nuclei in their cell.