what are the characterstics of arthopoda
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Characteristic features of Phylum Arthropoda
- The body structure shows bilateral symmetry.
- They are triploblastic.
- They can be found in all types of habitats – land, water and soil.
- They have jointed limbs.
- The body is segmented into three regions – Head, Thorax and Abdomen.
- The body cavity is filled with blood and is called the haemocoel. The blood is white in colour.
- The exoskeleton is hardened and is made of chitin.
- They have a well-developed central nervous system.
- The head is well developed and bears the sensory organs and brain.
- They have compound eyes and mosaic vision.
- The digestive tract is complete with the mouth and anus at opposite ends of the body.
- They have an open circulatory system with dorsal heart and arteries.
- Respiration is through the general body surface or by gills in aquatic forms and through trachea or book lungs in terrestrial forms.
- Sexes are separate and sexual dimorphism is exhibited.
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