1. It has a living, flexible and thin structure. It possesses fine pores, making it semi-permeable. It is chiefly composed of lipo-proteins.   Mitochondrion   Smooth Endoplasmic Reticulum   Nucleus   Cell Membrane   Hint Hint       2. It has a non-living, rigid structure. It is freely permeable and is chiefly composed of cellulose.   Secretory Granule   Cell Wall   Nuclear Membrane   Mitochondrion   Hint       3. It has a vesicular structure. It is formed when the substances produced in the endoplasmic reticulum are further processed in the golgi apparatus.   Secretory Granule   Leucoplast   Chloroplast   Nucleoplasm   Half-n-half Clue   4. It contains one or two centrioles, and is surrounded by microtubules or the centrosphere. It is situated near the nucleus.   Nucleus   Centrosome   Lysosome   Cytoplasm   Half-n-half Clue   5. It contains most of the cell organelles. It is composed of a mixture of water and soluble organic & inorganic compounds.   Chloroplast   Secretory Granule   Cytoplasm   Cell Membrane   Half-n-half Clue   6. It has numerous pores, making it semi-permeable. It is the covering of the nucleus of the cell.   Chloroplast   Rough Endoplasmic Reticulum   Nucleolus   Nuclear Membrane   Half-n-half Clue   7. It is made up of stacks of flattened membranous sacs. It mainly consists of vesicles, vacuoles and tubules.   Smooth Endoplasmic Reticulum   Golgi Apparatus   Leucoplast   Ribosome   Hint