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Read the following statements and choose...

Read the following statements and choose the correct option.
(i) Mycoplasma lacks a cell membrane.
(ii) Mycoplasma are the smallest living cells to exist on the planet.
(iii) Mycoplasma survives only without oxygen.

A

(i) and (iii) incorrect

B

(ii) and (iii)incorrect

C

(i) and (ii) incorrect

D

(ii) and (iii) incorrect

Text Solution

AI Generated Solution

The correct Answer is:
To solve the question, we need to analyze each of the provided statements about Mycoplasma: 1. **Statement (i)**: Mycoplasma lacks a cell membrane. - **Analysis**: This statement is incorrect. Mycoplasma does not have a cell wall, but it does have a plasma membrane (which is the cell membrane). Therefore, this statement is false. 2. **Statement (ii)**: Mycoplasma are the smallest living cells to exist on the planet. - **Analysis**: This statement is correct. Mycoplasma are indeed the smallest known living cells, with sizes ranging from 0.1 to 0.15 micrometers. They are classified as the simplest and smallest of all free-living prokaryotes. 3. **Statement (iii)**: Mycoplasma survives only without oxygen. - **Analysis**: This statement is also incorrect. Mycoplasma can survive in the presence of oxygen (they are aerobic) and can also survive without oxygen (facultative anaerobes). Thus, this statement is false. Based on the analysis of the statements: - Statement (i) is incorrect. - Statement (ii) is correct. - Statement (iii) is incorrect. Therefore, the correct option is that the first and third statements are incorrect, while the second statement is correct. ### Final Answer: - First and third statements are incorrect; the second statement is correct.
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