The granular, transparent and homogenious liquid substance present in the nucleus is known as nucleoplasm.
Structure: The nucleoplasm includes nucleoprotein, nucleic acid, enzyme and mineral salts etc. Its chemical structure is complicated.
i) It contains different organelles of the nucleus
ii) It regulates the physiological activities of the nucleus
iii) It helps in forming the ribonucleic acid (R N A) and De-oxyribo nucleic acid (D N A).