1. It is a clear space filled with water or other substances in the form of solutions. It has a covering called tonoplast.   Nuclear Membrane   Vacuole   Centrosome   Cell Wall   Hint Hint       2. It contains one or two centrioles, and is surrounded by microtubules or the centrosphere. It is situated near the nucleus.   Nucleolus   Chromoplast   Cell Membrane   Centrosome   Half-n-half Clue   3. It is round in shape. It is contained in the nucleus of the cell.   Chromoplast   Vacuole   Nucleolus   Cell Membrane   Half-n-half Clue   4. It contains most of the cell organelles. It is composed of a mixture of water and soluble organic & inorganic compounds.   Lysosome   Nucleoplasm   Cytoplasm   Nucleus   Half-n-half Clue   5. It is chiefly composed of a dense fluid. It contains chromatin fibres, which are made up of DNA (Deoxyribonucleic acid).   Leucoplast   Nuclear Membrane   Nucleoplasm   Mitochondrion   Half-n-half Clue   6. It is the largest cell organelle. It has a dense structure. It is spherical in shape.   Nucleus   Cell Wall   Cytoplasm   Ribosome   Hint       7. It has a small, dense and granular structure. It is spherical in shape and is single-walled.   Nucleoplasm   Smooth Endoplasmic Reticulum   Ribosome   Chloroplast   Hint