Given below are two statements: Statement I: Mycoplasma can pass through less than 1 micron filter size. Statement II: Mycoplasma are bacteria with a cell wall. In the light of the above statements, choose the most appropriate answer from the options given below:
Answer: (C) Statement I is correct but Statement II is incorrect. Answer: (C) Statement I is correct but Statement II is incorrect Solution: Mycoplasma are the smallest cells (about 0.3 µm) and can indeed pass through filters of less than 1 micron pore size, so Statement I is correct.
- A.Both Statement I and Statement II are correct
- B.Both Statement I and Statement II are incorrect
- C.Statement I is correct but Statement II is incorrect✓
- D.Statement I is incorrect but Statement II is correct
Correct Answer
(C) Statement I is correct but Statement II is incorrect
Solution & Explanation
Answer: (C) Statement I is correct but Statement II is incorrect Solution: Mycoplasma are the smallest cells (about 0.3 µm) and can indeed pass through filters of less than 1 micron pore size, so Statement I is correct. However, Mycoplasma lack a cell wall (all prokaryotes have a cell wall except mycoplasma), so Statement II is incorrect. Hence Statement I is correct but Statement II is incorrect. NCERT Reference: Ch 8, p.90, lines 3–4: "prokaryotes have a cell wall surrounding the cell membrane except in mycoplasma."