NEETBotanyCell - The Unit of Life
Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A): Rough endoplasmic reticulum is present in prokaryotic cells due to the presence of 70S ribosomes. Reason (R): Prokaryotic cells lack an endomembrane system and all membrane-bound organelles. In the light of the above statements, choose the most appropriate answer from the options given below:
Options
- ABoth (A) and (R) are correct and (R) is the correct explanation of (A)
- BBoth (A) and (R) are correct but (R) is not the correct explanation of (A)
- C(A) is correct but (R) is not correct
- D(A) is not correct but (R) is correct
Correct answer
D. (A) is not correct but (R) is correct
Step-by-step solution
Assertion (A) is incorrect because prokaryotic cells do not possess rough endoplasmic reticulum (RER). Although prokaryotes have 70S ribosomes, they lack the membrane network of the endoplasmic reticulum to which ribosomes could attach. Reason (R) is correct because a defining feature of prokaryotic cells is the absence of an endomembrane system and all membrane-bound organelles, such as the endoplasmic reticulum, Golgi complex, lysosomes, and mitochondria. Therefore, (A) is not correct but (R) is correct. Answer: