A. rounded structure found in cytoplasm near nucleus.
B. rounded structure inside nucleus and having rRNA.
C. rod-shaped structure in cytoplasm near the nucleus.
D. none of the above.
Correct Answer : B.
Nucleolus is a small rounded body within a resting nucleus that contains RNA and proteins. It is usually associated with a specific chromosomal site and involved in ribosomal RNA synthesis and the formation of ribosomes.