EVERYDAY SCIENCE

Detailed explanation-1: -Nematodes are pseudocoelomate members of the clade Ecdysozoa. They have a complete digestive system and a pseudocoelomic body cavity. This phylum includes free-living as well as parasitic organisms. They include dioecious and hermaphroditic species.

Detailed explanation-2: -Although nematodes do have a space in the body between the digestive tract and the body wall, it is not lined with tissue and is not considered to be a true coelom. Thus, nematodes are sometimes referred to as pseudocoelomates (Fig.

Detailed explanation-3: -Nematodes are pseudocoelomates with internal structures existing in a pressurized, fluid-filled cavity (the pseudocoel) between the outer body wall and the inner digestive tract; platyhelminths are acoelomate, and their cells are packed tightly together with very limited extracellular space.

Detailed explanation-4: -nematode, also called roundworm, any worm of the phylum Nematoda. Nematodes are among the most abundant animals on Earth.