Chage identity of a substance
The ependymal cells line the ventricles of the brain. They compose a thin lining along the brain's ventricle cell, and the central canal of spinal cord. They are a type of glial cells. They play an important role in the production of cerebrospinal fluid.
<span>The correct answer would be amoeba. So the amoeba consists of protoplasm and a nucleus. For an amoeba the nucleus is a major organelle, which is located centrally. As such a major organelle it naturally has a huge role, and that is that it controls reproduction (it contains the chromosomes) and many other important functions (including eating and growth).</span>
