1. Cell Wall   It has a non-living, rigid structure. It is freely permeable and is chiefly composed of cellulose.   It has a small, dense and granular structure. It is spherical in shape and is single-walled.   It consists of an irregular network of double-walled tubular membrane. It does not have ribosomes attached to it.   It is round in shape. It is contained in the nucleus of the cell.   Hint Hint       2. Nucleolus   It is round in shape. It is contained in the nucleus of the cell.   It contains most of the cell organelles. It is composed of a mixture of water and soluble organic & inorganic compounds.   It has a non-living, rigid structure. It is freely permeable and is chiefly composed of cellulose.   It has numerous pores, making it semi-permeable. It is the covering of the nucleus of the cell.   Half-n-half Clue   3. Cell Membrane   It has a living, flexible and thin structure. It possesses fine pores, making it semi-permeable. It is chiefly composed of lipo-proteins.   It is a green-colored plastid. It contains a pigment called chlorophyll.   It is round in shape. It is contained in the nucleus of the cell.   It consists of an irregular network of double-walled tubular membrane. It has ribosomes attached to it.   Hint       4. Nucleoplasm   It is a green-colored plastid. It contains a pigment called chlorophyll.   It is a colorless plastid. It contains starch.   It has a double-walled structure. Its inner wall is produced into folds known as cristae. It is generally sausage-shaped.   It is chiefly composed of a dense fluid. It contains chromatin fibres, which are made up of DNA (Deoxyribonucleic acid).   Half-n-half Clue   5. Smooth Endoplasmic Reticulum   It consists of an irregular network of double-walled tubular membrane. It does not have ribosomes attached to it.   It has a double-walled structure. Its inner wall is produced into folds known as cristae. It is generally sausage-shaped.   It is made up of stacks of flattened membranous sacs. It mainly consists of vesicles, vacuoles and tubules.   It is a membranous sac budded off from the golgi apparatus. It contains several types of enzymes.   Half-n-half Clue   6. Centrosome   It is a green-colored plastid. It contains a pigment called chlorophyll.   It is the largest cell organelle. It has a dense structure. It is spherical in shape.   It contains one or two centrioles, and is surrounded by microtubules or the centrosphere. It is situated near the nucleus.   It contains most of the cell organelles. It is composed of a mixture of water and soluble organic & inorganic compounds.   Half-n-half Clue   7. Chloroplast   It has a small, dense and granular structure. It is spherical in shape and is single-walled.   It is a green-colored plastid. It contains a pigment called chlorophyll.   It consists of an irregular network of double-walled tubular membrane. It has ribosomes attached to it.   It contains one or two centrioles, and is surrounded by microtubules or the centrosphere. It is situated near the nucleus.   Hint