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