Answer:The nitrogen present in the soil is not directly used by the bacteria. It can be used only when the nitrogen is converted into usable form. These bacteria convert atmospheric nitrogen into ammonia, then nitrite which is then converted into nitrate. This nitrate is used by the roots of the plants like soybeans and peas. This is the role of bacteria present in the roots of the plant to convert atmospheric nitrogen into usable form that can be used by plants.
The nervous system is made up of neurons and glia. Neurons are specialized cells that are capable of sending electrical as well as chemical signals
Glial cells or neuroglia are non-neuronal cells in the central nervous system (brain and spinal cord) and the peripheral nervous system.
<u>Glial cells are cells that provide support functions for the neurons by playing an information processing role that is complementary to neurons.</u>
