A growth medium or culture medium is a liquid or gel designed to support the growth of microorganisms or cells, or small plants like the moss Physcomitrella patens. There are different types of media for growing different types of cells.
Best Answer: Reading some arbitrary definition of a crystal might get confusing so I'll simplify it. What you are thinking of are the chemical compound called calcium oxalate.They form needle shaped crystals in a plant cell's vacuole that pretty much look like toothpicks. Their main function is to protect the plant from herbivores.They aren't chemically poisonous but because of their shape, they can prick soft tissue.hen an herbivore eat a part of the plant, the vacuoles are smashed up and these needle like crystals are exposed along with the sap of the plant. Perhaps you've been exposed to these crystals when you squeeze a part of a plant and touch its sap.
This membrane provides shape to the cells of plants and animals. Cell wall is an additional covering over the cell membrane in plant cells. It gives shape and rigidity to these cells. Cell Structure and Function Each organ in the system performs different functions such as digestion, assimilation and absorption.Similarly, different organs of a plant perform specific/specialized functions. Plant cells contain chloroplasts which are used for photosynthesis. â¢ Plant cells have a large vacuole (it's like a fluid sack), compared to an animal cell. â¢ Animal cells are 'blobby', but cells in plants are more structured due to the cell wall, and form a lattice like structure which helps with rigid ness.