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Write the general characters of the phyl...

Write the general characters of the phylum aschelminthes.

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1. The body of these worms is circular.
2. They are free living or parasite.
3. They are triploblastic, pseudocoelomates with organ system level of organisation.
4. Body is covered by cuticle.
5. Digestive system is complete with mouth. pharynx and anus.
6. Excretory system consists of rennet glands.
7. Sexes are separate. Sexual dimorphism is seen.
8. Fertilization is internal.
9. Development may be direct or indirect. e.g., Ascaris.
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