1. It is the largest cell organelle. It has a dense structure. It is spherical in shape.   Golgi Apparatus   Nuclear Membrane   Chromoplast   Nucleus   Hint Hint       2. It has numerous pores, making it semi-permeable. It is the covering of the nucleus of the cell.   Nucleus   Nuclear Membrane   Lysosome   Cytoplasm   Half-n-half Clue   3. It is made up of stacks of flattened membranous sacs. It mainly consists of vesicles, vacuoles and tubules.   Cytoplasm   Golgi Apparatus   Chloroplast   Chromoplast   Hint       4. It contains one or two centrioles, and is surrounded by microtubules or the centrosphere. It is situated near the nucleus.   Centrosome   Rough Endoplasmic Reticulum   Chloroplast   Secretory Granule   Half-n-half Clue   5. It is round in shape. It is contained in the nucleus of the cell.   Nucleolus   Rough Endoplasmic Reticulum   Smooth Endoplasmic Reticulum   Nuclear Membrane   Half-n-half Clue   6. It has a double-walled structure. Its inner wall is produced into folds known as cristae. It is generally sausage-shaped.   Mitochondrion   Ribosome   Rough Endoplasmic Reticulum   Nucleolus   Half-n-half Clue   7. It has a living, flexible and thin structure. It possesses fine pores, making it semi-permeable. It is chiefly composed of lipo-proteins.   Cell Membrane   Mitochondrion   Ribosome   Golgi Apparatus   Hint