Question

Assertion:
Eukaryotes contain membrane-bound cell organelles and linear chromosomes present in the nucleus.
Reason:
In prokaryotes nucleus is present.
A.Both Assertion and Reason are correct and the reason is the correct explanation for Assertion.
B.Both Assertion and Reason are right but Reason is not the correct explanation for Assertion.
C.The assertion is correct but the reason is incorrect
D.Both Assertion and Reason are incorrect.

Answer 1

Hint: Organisms can be classified based on the complexity of their cell structure. Based on this complexity, the cells can be divided as eukaryotic and prokaryotic. Prokaryotic cells are exclusively found in unicellular organisms and eukaryotic cells can be found in both unicellular and multicellular organisms

Complete answer:Eukaryotes have the name since they have a well-developed cell structure, the cells contain various membrane-bound organisms such as mitochondria and plastids suspended in the cytoplasm. They also possess a well-defined nucleus, enclosed by a nuclear membrane, which encloses the genetic material known as linear chromosomes, which help in cell replication and genetic transmission. Thus the statement given as assertion is right.
The prokaryotic cells are relatively less developed compared to eukaryotic cells. These cells are devoid of well-developed organelles. The only organelles which are present are ribosomes, suspended in the cytoplasm. These organisms do not have a well-defined nucleus or a nuclear membrane. The primitive nucleus present is known as a nucleoid. Thus no proper nucleus is present in prokaryotes. Thus the statement given as reason is incorrect.
Thus option C is the most appropriate answer since assertion is correct while reason is incorrect.

Note:The region within the prokaryotic cells, which is shaped irregularly is known as the nucleoid. It consists of the genetic material required for cell replication. The chromosomes present in these cells are circular, unlike the straight chromosomes present in eukaryotes. Nucleoid is generally formed by the condensation of chromosomes. These cells are mostly present in primitive organisms such as bacteria.