1. Chloroplast   It synthesizes proteins by producing and storing RNA (Ribonucleic acid). At the same time, it orders ribosomes to synthesize proteins.   It is a plastid, containing a pigment called chlorophyll. This chlorophyll captures energy from sunlight and helps in the manufacture of food by the process of photosynthesis.   It provides shape to the cell. It is semi-permeable, regulating the entry and exit of substances, namely solutes and ions.   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.   Hint Hint       2. Endoplasmic Reticulum   It provides support to the cell. It also helps in the synthesis and transport of proteins and fats.   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.   It synthesizes and secretes certain substances, namely hormones and enzymes. It also helps in the formation of acrosome of sperm.   It controls and coordinates all the activities and functions of the cell. It plays a vital role in cell division.   Half-n-half Clue   3. Leucoplast   It is a plastid, containing a pigment called chlorophyll. This chlorophyll captures energy from sunlight and helps in the manufacture of food by the process of photosynthesis.   It provides shape to the cell. It is semi-permeable, regulating the entry and exit of substances, namely solutes and ions.   It is a plastid. It helps in the storage of starch.   It provides support to the cell. It also helps in the synthesis and transport of proteins and fats.   Half-n-half Clue   4. Centrosome   It is known as the 'site of protein synthesis in the cell', and synthesizes proteins. It is chiefly composed of RNA (Ribonucleic acid).   It synthesizes proteins by producing and storing RNA (Ribonucleic acid). At the same time, it orders ribosomes to synthesize proteins.   It initiates and regulates cell division. It also helps in forming spindle fibres, with the help of asters.   It provides shape to the cell. It is semi-permeable, regulating the entry and exit of substances, namely solutes and ions.   Half-n-half Clue   5. Lysosome   It provides shape to the cell. It is semi-permeable, regulating the entry and exit of substances, namely solutes and ions.   It performs intracellular digestion. It also helps in destroying foreign substances.   It is a plastid. It helps in the storage of starch.   It is the house of all metabolic activities and functions in the cell. In other words, it contains most of the cell organelles, each of which perform a specific function.   Half-n-half Clue   6. Cell Membrane   It is a plastid, containing a pigment called chlorophyll. This chlorophyll captures energy from sunlight and helps in the manufacture of food by the process of photosynthesis.   It contains chromatin fibres, which are made up of DNA (Deoxyribonucleic acid). After cell division takes place, these chromatin fibres undergo certain structural changes, and are called chromosomes. These chromosomes carry the hereditary information of the genes.   It provides shape to the cell. It is semi-permeable, regulating the entry and exit of substances, namely solutes and ions.   It initiates and regulates cell division. It also helps in forming spindle fibres, with the help of asters.   Hint       7. Nucleolus   It provides support to the cell. It also helps in the synthesis and transport of proteins and fats.   It controls and coordinates all the activities and functions of the cell. It plays a vital role in cell division.   It initiates and regulates cell division. It also helps in forming spindle fibres, with the help of asters.   It synthesizes proteins by producing and storing RNA (Ribonucleic acid). At the same time, it orders ribosomes to synthesize proteins.   Half-n-half Clue