Question

Read the assertion and reason carefully to mark the correct option in question.

Assertion: Nuclear matrix or nucleoplasm contains one or more cylindrical structures called the nucleolus.

Reason: Smaller and more numerous nucleoli are present in cells actively carrying out protein synthesis.

Answer 1

Assertion

Nuclear matrix or nucleoplasm contains one or more cylindrical structures called the nucleolus.

Elaboration:

The nucleolus is found within the nucleus that is essential for ribosomal $RNA$ transcription and processing. It is found in the nucleoplasm or nuclear matrix and is spherical in shape.

Reason

Smaller and more numerous nucleoli are present in cells actively carrying out protein synthesis.

Elaboration:

Those cells which are very active in carrying out protein synthesis have large and more numerous nucleoli.

Nucleolus forms ribosomal $RNA$. More nucleoli are essential for creating more and more $rRNA$ and ribosomes. This is essential for the formation of large quantities of proteins.

Final answer

(D) If both assertion and reason are false