1. It has a non-living, rigid structure. It is freely permeable and is chiefly composed of cellulose.   Hint Hint       2. It is chiefly composed of a dense fluid. It contains chromatin fibres, which are made up of DNA (Deoxyribonucleic acid).   First letter clue   3. It is a colorless plastid. It contains starch.   First letter clue   4. It has numerous pores, making it semi-permeable. It is the covering of the nucleus of the cell.   First letter clue   5. It is a membranous sac budded off from the golgi apparatus. It contains several types of enzymes.   First letter clue   6. It contains most of the cell organelles. It is composed of a mixture of water and soluble organic & inorganic compounds.   First letter clue   7. It is made up of stacks of flattened membranous sacs. It mainly consists of vesicles, vacuoles and tubules.   Hint