1. It has numerous pores, making it semi-permeable. It is the covering of the nucleus of the cell.   Smooth Endoplasmic Reticulum   Nuclear Membrane   Vacuole   Centrosome   Hint Half-n-half Clue   2. It consists of an irregular network of double-walled tubular membrane. It has ribosomes attached to it.   Vacuole   Ribosome   Rough Endoplasmic Reticulum   Cell Membrane   Half-n-half Clue   3. It contains most of the cell organelles. It is composed of a mixture of water and soluble organic & inorganic compounds.   Cytoplasm   Leucoplast   Cell Membrane   Cell Wall   Half-n-half Clue   4. It has a living, flexible and thin structure. It possesses fine pores, making it semi-permeable. It is chiefly composed of lipo-proteins.   Centrosome   Rough Endoplasmic Reticulum   Cell Membrane   Lysosome   Hint       5. It has a non-living, rigid structure. It is freely permeable and is chiefly composed of cellulose.   Cell Wall   Ribosome   Golgi Apparatus   Chloroplast   Hint       6. It is a membranous sac budded off from the golgi apparatus. It contains several types of enzymes.   Smooth Endoplasmic Reticulum   Lysosome   Nucleolus   Cytoplasm   Half-n-half Clue   7. It is round in shape. It is contained in the nucleus of the cell.   Nuclear Membrane   Smooth Endoplasmic Reticulum   Mitochondrion   Nucleolus   Half-n-half Clue