Question
Write an account of general features of roundworms.
✓
Answer
General features of roundworms are:
- The body is cylindrical and tapering at both ends.
- No segmentation.
- Bilateral symmetry.
- They have organ system level of organisation
- The anterior end does not form a distinct head.
- There are no locomotory appendages in roundworms.
- The body wall consists of firm, non-living, resistant cuticle, epidermis and muscle layer.
- These are pseudocoelomates.
- Hydroskeleton is present.
- Digestive tract is complete. Respiration occurs by body surface.
- Circulatory system is undeveloped. Excretion occurs through gland cells.
- Sexes are separate. Sexual dimorphism is present. Fertilisation is internal. There is no asexual reproduction
- Development is direct.
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