Largest organelle in eukaryote is
The Nucleus - The nucleus constitute the central, more dense, pa of the cell. It is usually rounded or ellipsoid. Occasionally it may be elongated, indented or lobed. It is the largest cell organelle measuring 4-10 um in diameter. All cells in the body contain nucleus, except mature red blood cells (RBCs) in circulation. Nuclear Components - Chromatin, Nucleolus, Nuclear membrane, Nucleoplasm. REF : Inderbir Singh's Textbook of Human Histology, seventh edition, pg.no., 28.
ER
Nucleus
Cytoskeleton
Golgi body
General anatomy