Question

Phylum aschelminthes?
What is that

Answer 1

This are pseudocolomate worms commonly known as round worms.They are mostly aquatic some are terrestrial and parasitic habitats.

Answer 2

★ PHYLUM - ASCHELMINTHES:-

→ Body shape is circular in cross-section, hence, the name roundworms.

→ Habitat - They may be free living, aquatic and terrestrial or parasitic in plants and animals.

→ Level of organization - organ-system level of body organization and triploblastic.

→ Symmetry is bilaterally symmetrical.

→ Body Cavity - Pseudocoelomate animals.

→ Digestive system - Alimentary canal is complete with a well developed muscular pharynx.

→ Excretion - An excretory tube removes body wastes from the body cavity through the excretory pore.

→ Reproduction is unisexual or dioecious. Also show sexual dimorphism, females are longer than males.

→ Fertilisation is internal.

→ Development is direct, the young ones resemble the adult or indirect where larvae is present.

→ Examples:- Ascaris, Wuchereria, Ancylostoma.