1. It is semi-permeable, allowing substances to enter and leave the nucleus of the cell. It also provides protection to the nucleus of the cell.   Cell Wall   Golgi Apparatus   Nucleoplasm   Nuclear Membrane   Hint Half-n-half Clue   2. It is a plastid, containing pigments such as xanthophyll (yellow in color) and carotene (orangish-red in color). These pigments impart color to flowers and fruits of plants.   Nucleus   Chloroplast   Cell Wall   Chromoplast   Half-n-half Clue   3. It performs intracellular digestion. It also helps in destroying foreign substances.   Cell Membrane   Cytoplasm   Lysosome   Chromoplast   Half-n-half Clue   4. It is known as the 'site of protein synthesis in the cell', and synthesizes proteins. It is chiefly composed of RNA (Ribonucleic acid).   Nuclear Membrane   Centrosome   Endoplasmic Reticulum   Ribosome   Half-n-half Clue   5. It helps in the storage of water and several other substances, namely food, waste products and pigments. It also provides turgidity to the cell.   Vacuole   Chromoplast   Endoplasmic Reticulum   Ribosome   Hint       6. It synthesizes proteins by producing and storing RNA (Ribonucleic acid). At the same time, it orders ribosomes to synthesize proteins.   Lysosome   Nucleoplasm   Chromoplast   Nucleolus   Half-n-half Clue   7. It is the site of ATP (Adenosine triphosphate) synthesis. It also synthesizes respiratory enzymes.   Leucoplast   Mitochondrion   Lysosome   Nucleus   Half-n-half Clue