From here, branches or lateral roo ts are formed. The pericycle forms the outer layers of the core, or the center of the root. Just inside the core are two tissues, the xylem and the phloem. Conifers, as already mentioned, are dicots. Therefore, along with the primary growth that occurred in all of the tissues just mentioned, secondary growth occurs as well.
Secondary tissues develop from two meristems.
The cork expands outwards to cover the root. This process of root formation is truly amazing. The form of asexual reproduction yet to be discussed is tissue culture. One reason that this form of asexual reproduction so wonderful is because of the fact that any plant tissue with cells that can divide can be used for tissue culture. Cultures have been started from the fruit, endosperm, pollen and embryos of various plants.