Phylum Athropoda (spider )

GALLERY 

spider 

spider eating insert 

spider lay egg

interesting facts 

• spider body consist of two the cephalotorax and  the abdomen 
• with the exception of one family , all spiders are venomous 
• the number of eggs a female delivers can be up to 3,000
• all spiders are predator 
• males risk being  eaten by their female mates 
• spider can't digest solid food 
• all spiders produce silk 
• not all spider spin webs 
• male spider use modified appendages to called pedipalps to mates with female
• spiders use silk to protect their eggs 
• spiders don't move by muscle alone 
• the blood of a spider is light blue in colour 

video link 

• https://www.youtube.com/watch?v=g5iN0ZaoW7M (spider spinning web )
• https://www.youtube.com/watch?v=yMRaULTY9pI (spider eating mosquito)
• https://www.youtube.com/watch?v=C8VsYXQjKXs (spider with babies on her   back )

classification

1. Class Crustacea 

• has 2 body main region .which are cephalotorax and abdomen . But some may have head and trunk .
• have 5 or more pair of legs
• have 2 pairs of antenna
• example ; crab and crayfish 

     2. Class Chilopoda 

• have 2 main body region which are head and trunk 
• have many pair of  legs 
• has one pair of antenna 
• example ; centipade 

  3.  Class Diplopoda

• have 2 main body region 
• have 2 pair of legs per body  segment 
• has one pair of antenna 
• example ; milipade 

  4. Class Arachnida 

• example ; spider 

  5. Class Insecta 

• have 3 main body region, which are head ,torax and abdomen 
• have 3 pair of legs 
• have one pair of antenna 
• wings usually present
• example ; grasshopper