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.
Plant cells tend to have one large central vacuole which stores food (sugar and salts in solution) and water. The storage of water helps to support the plant. Absorbing more water makes a vacuole bigger which helps a plant to grow.nimal cell vacuoles are much smaller than their plant cell counterparts and in animal cells their roles are more subservient. They assist in expelling proteins and lipids from the cell. The process is known as exocytosis and the role of the vacuole here is to store the molecules and facilitate their transport.