Question

define Nucleolus cbse class 9 science

Answer 1

nucleolus:-A small body in the nucleus of a cell that contains protein and RNA and is the site for the synthesis of ribosomal RNA and for the formation of ribosomal subunits

Answer 2

A nucleolus (plural: nucleoli) is the part of a eukaryotic cell where ribosomes are made. Viewed through a microscope, the nucleolus appears as a dark spot inside the cell's nucleus. It is made up of dense RNA and proteins.