Biology, asked by priyast2805, 7 months ago

hey guys answer for my question. write any 10 important points of phylum Aschelminthes ​

Answers

Answered by aavika279
1

General characteristics of Phylum Aschelminthes

Gr. Askos: cavity; helmins: worms. Nema: thread, helmins: worms

Habitat: They are marine or freshwater animal.

Habit: They are endoparasite.

Coelom: Pseudocoelomate which means they have a cavity called pseudocoel between the gut and body wall.

Symmetry: bilateral

Germ layer; triploblastic

Grade of organization: Organ system grade

They are non-segmented round worm.

Their body is covered with cuticle.

Digestive system: simple type

Answered by rewa9270
1

They are mostly aquatic, free-living or parasitic.

They are bilaterally symmetrical, unsegmented worms.

The body is slender, vermiform and usually worm-like or flattened.

They are usually small, even microscopic, while some reach a meter or more in length.

They are triploblastic and pseudocoelomate with organ system grade of body organization.

Body wall with a syncytial or cellular epidermis, externally covered with the thick cuticle of scleroprotein.

Cilia are absent except anterior cilia of rotifers.

Muscles include mostly longitudinal fibers.

The digestive canal is straight and complete with a mouth, straight non-muscular intestine, and anus, pharynx muscular and highly specialized.

Respiratory and circulatory systems are absent.

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