Complex sentence: Entry into the roots is accomplished by mechanical pressure and cutting action of the stylet of the nematode, usually just behind the root cap but may occur through other surfaces of the roots, rhizomes, or tubers.
Split into simpler sentences: Entry into the roots is accomplished by mechanical pressure and cutting action of the stylet of the nematode. Usually entering plants just behind the root cap but may enter through other surfaces of the roots, rhizomes, or tubers.