EVERYDAY SCIENCE

Detailed explanation-1: -Digestive System: Complete food tube with mouth and anus. Captures food with an evertible proboscis, often armed with a stylet at the tip. Circulatory System: Blood vessel system in parenchymal mesoderm. Locomotion: Ciliated epithelium and muscular contractions.

Detailed explanation-2: -Digestive system: The nemerteans have a complete one-way digestive tract. They have a mo ‘all for ingestion of food and an anus for eliminating digestive wastes. The food moves from anterior to posterior part of digestive cavity and mechanical breakdown of food, digestion, absorption, and feces formation take place.

Detailed explanation-3: -Animals in phylum Nemertea show a flattened morphology, that is, they are flat from front to back, like a flattened tube. Nemertea are soft and unsegmented animals (Figure 1). A unique characteristic of this phylum is the presence of a proboscis enclosed in a rhynchocoel.

Detailed explanation-4: -They have a complete digestive tract, with mouth and anus. A complete digestive tract is considered an advantage, since the one-way flow of food allows for regional specialization. They also have a closed circulatory system. One of their unique characteristic is their probosis.