| Question |
Answer |
| Is the phyllum that contains the sponges (means pore bearing) |
porifera |
| Is an animal in the phylum cniadaria that hows the main characteristics of the phylum and moves by sommersaulting |
hydra |
| Is a cnidarian whose life cycle includes the medusa and planula stages |
jellyfish |
| Is the phylum that includes hydras and jellyish |
cnidaria |
| A coated cell mass produced by sponges capable of growing into an adult sponge |
gemmules |
| ____ is the name of a stinging cell in a cnidarian |
cnidocysts |
| _____ is a layer between the ectoderm and the endoderm |
mesoglea |
| The material that forms the special skeleton of the sponge is called a ____. Have been called "little spikes". |
specules |
| The stage in the aurelia life cycle that reminds us of a hydra is called a ___. |
polyp |
| The bell-shaped free swimming form of a jellyfish is the ______. |
medusa |
| Animals with backbones are referred to as ____. |
vertebrates |
| Name the kingdon of poriferans and cnidarians. |
K. Annimelia |
| Name the opening in the sponge where the water leaves. |
excurrent pore or osculum |
| The ___ ____ is found in the hydra's mesoglea and is responsible for the hydra's sensitivity. |
nerve net |
| The outside layer of cells of the hydra is its ____. |
epidermis |
| Name two animals with gastrovascular cavities. |
hydra & obelia |
| What is the primary difference between a sponge and a cnidarian? |
sponges filter feederscnidarians are predators |
| Animals without backbones are called |
invertebrates |
| What do we call the cells in sponges that function in circulation and excretion? |
amebocytes |
| Name the cells that cause water currents through the sponge |
collar cells |
| What is the open space in the middle of the sponge called |
central cavity spongoceal |
| What is the organ of attachment of the hydra called? |
basal disk |
| What cell in the sponge has no particular shape |
amobocyte |
500 Words
