1. It is chiefly composed of a dense fluid. It contains chromatin fibres, which are made up of DNA (Deoxyribonucleic acid).   Nucleoplasm   Nuclear Membrane   Mitochondrion   Ribosome   Hint Half-n-half Clue   2. It has a living, flexible and thin structure. It possesses fine pores, making it semi-permeable. It is chiefly composed of lipo-proteins.   Ribosome   Cell Membrane   Cytoplasm   Rough Endoplasmic Reticulum   Hint       3. It has a non-living, rigid structure. It is freely permeable and is chiefly composed of cellulose.   Cell Wall   Smooth Endoplasmic Reticulum   Lysosome   Centrosome   Hint       4. It consists of an irregular network of double-walled tubular membrane. It has ribosomes attached to it.   Rough Endoplasmic Reticulum   Golgi Apparatus   Chloroplast   Centrosome   Half-n-half Clue   5. It is the largest cell organelle. It has a dense structure. It is spherical in shape.   Nuclear Membrane   Mitochondrion   Nucleus   Golgi Apparatus   Hint       6. It is a plastid that is colored differently in different cells. It contains pigments such as xanthophyll (yellow in color) and carotene (orangish-red in color).   Cell Membrane   Chromoplast   Rough Endoplasmic Reticulum   Leucoplast   Half-n-half Clue   7. It has a small, dense and granular structure. It is spherical in shape and is single-walled.   Golgi Apparatus   Nuclear Membrane   Cytoplasm   Ribosome   Hint