Module Four Flashcards
two major subgroups of animalia
invertebrates and vertebrates
what are the vertebrates represented by as a phylum?
Chordata
where do the majority of the invertebrates live? besides insects
the ocean
what does prorifera contain?
sponges `
what is a substrate?
when sponges are attatched to a bottom surface
what does prorifera mean?
“pore-bearing”
pore cells
allow water to move into the animal
collar cells
have a flagellum that make a current of water to flow into the animal
osculum
large opening on the top of a sponge through which filtered water is expelled
how does water go through the sponge
enters from the side and exits out the top
Amoebocytes
cells within a sponge that produce its skeletal structure, preform digestion, and repair cell damage
gemmule
a group of cells surrounded by a shell made of spicules
larva
an immature state of an animal that appears different than the adult stage
metamorphosis
changing from larva to adult form
spherical symmetry
body form in which any cut through the body’s center would be identical to eachother
what is radial symmetry?
a body form in which any longitudinal cut along the length through the organism’s central axis results in identical halves
bilateral symmetry
a body form in which only one longitudinal cut through the organism’s center would result in identical halves
What’s a polyp?
an attached cnidarian stage appearing sack like or barrel like
Medusa??
a free swimming cnidarian stage appearing bell or umbrella shaped
what is a mesoglea?
a jelly-like substance between the inner and outer layer of cells in a cnidarian
Nearly all cnidarians are ______?
carnivores
two basic body forms of the cnidarians are the _____ and the ____?
polyp and medusa
two sides of a cnidarian
oral and aboral