4 key characteristics of this phylum?
chordates have a notochord, dorsal hollow nerve cords, pharyngeal slits, and a post-anal-tail
The key characteristics of the Phylum Arthropoda are:
1. Exoskeleton: Arthropods have a hard exoskeleton made of chitin, which is a tough polysaccharide. The exoskeleton provides support and protection to their body.
2. Jointed Appendages: Arthropods have jointed appendages, which are specialized structures used for locomotion, feeding, defense, and sensory perception.
3. Segmentation: The body of arthropods is segmented, with each segment specialized for a particular function. This segmentation allows for a high degree of mobility and flexibility.
4. Open Circulatory System: Instead of blood, arthropods have hemolymph, which circulates throughout their body cavity. This system helps to transport nutrients, waste products, and hormones throughout their body.
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