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.
Cytoplasm. Cytoplasm is a jelly-like substance made mostly of water, and dissolved substances that holds all of the organelles in place. Everything inside the cell floats in the cytoplasm. Both plants and animals contain cytoplasm in their cells to hold everything in place!ell Wall. Cell walls are found only in plant cells. The main functions of the cell wall include supporting, protecting, and maintaining the shape of the plant cell. The cell wall is the outermost layer of the plant cell. Cell walls are porous to allow water, carbon dioxide, and other substances to pass through.