Mosab Nouraldein Mohammed Hamad2023-12-132023-12-132018https://ds.eaeu.edu.sd/handle/10.58971/831Nematodes are elongated ,cylindrical , unsegmented worm with tapering end & they are bilaterally symmetrical . ( the name nematodes means thread like , from nema, thread.) The adults vary in size from millimeters to a meter in length & they are colorless and vary from translucent to opaque .other