No
Sponges do not have blood. They do not have a circulatory system either.
none
noLIEthey do
spongin and spicules are the sponges body support and defence
Because sponges have seawater to carry nutrients and waste.
Spicules provide structural support.
Sponges are mainly filter feeders, eating particles and plankton in water that enters their system
The spike forms a rigid frame that helps support and protect the sponges body.
sponges let the water enter through the canal and circulates all over the body.
Although sponges do not have a skeletal system they do have skeleton components that may be made of silicon or lime. A sponge is found in the ocean and is a hollow tube that has several large pores throughout it.
In insects there is a skeleton of cutin , cuticle , carotin while in sponges there are namatocytes
tru tissue