When cells work together to perform a specific function, that group of cells is called a tissue. Cartilage is a type of connective tissue made from many cells. Other types of tissues in your body include your muscles and skin. Complex multicell organisms have many different types of tissues, all comprising two or more types of cells.
If you are trying to trigger more growth you would want to cut off the tips of the main shoots, make sure the plant has food and water for the striving stomata and developing stomata. Hope I Helped <3 :)