Question

what is charactorstics of platyhelminthes

Answer 1

Characteristics of Platyhelminthes. The animals of Phylum Platyhelminthes are worm-like animals with soft and unsegmented bodies.
They are characterized by bilateral symmetry, absence of a body cavity, no respiratory and circulatory organs, and well-developed flame cells to carry out the excretory function.

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Answer 2

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CHARACTERISTICS OF PLATYHELMINTHES.....


- Their body dorsoventrally flattened...

- They exhibit bilateral symmetry...

- Also, they are triploblastic, with three germ layers..

- They don't have body cavity and are acoelomate..

- Body is soft and unsegmented..

- They are mostly parasitic with a few free-living..

- These animals are hermaphrodites..

- Respiratory and circulatory systems are absent, and respiration generally occurs through diffusion through the general body surface..

- Sexual reproduction happens through gametic fusion..

- Asexual reproduction also happens in a few species through regeneration and fission..

- Fertilisation is internal..

- The excretory system has protonephridia with the flame..

- There is primitive nervous system present..

- They exhibit an organ system grade of organization..

- The digestive system is incomplete or absent. There is a single opening which leads to well-developed gastro- vascular cavity. The anus is absent. There is no true stomach structure. In few species the digestive system is completely absent..







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