Arms extend from the middle outwards and tube feet for oxygen

question 11 options:

segmented worms

arthropods

mollusks

sponges

echinoderm

Insects, arachnids, and crustaceans  

Insects have 3 body segments. (head, thorax, abdomen)

Have a hard exoskeleton made of chitin.

Appendages be used for feeding, defense, sensory and reception.

Invertebrate phyla that obtains oxygen by using gills (marine) or air tubes (terrestrial.)

Use pincers and stingers as attack weapons to defend themselves

Characterized by having jointed legs, segmented bodies, and sometimes wings

the unequal cytoplasmic division that  results  in  one egg  and three polar bodies ensures that a fertilized  egg has  ample nutrients  forits journey  to  the uterus.