Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
28 Cards in this Set
- Front
- Back
|
sponges
|
aquatic animals that make up the phylum Porifera
|
|
|
sessile
|
animals that attach themselves firmly to a surface and do not move
|
|
|
choanocytes
|
collar cells
line the interior of the cylinder |
|
|
ostia
|
pores in the body wall
|
|
|
osculum
|
opening at the top of the sponge
|
|
|
spongin
|
simple skeleton made of a network of tough, flexible protein fibers
|
|
|
spicules
|
tiny, hard particles of calcium carbonate or silicon dioxide that are often shaped like spikes
|
|
|
filter feeding
|
type of feeding where choanocytes trap plankton and other tiny organisms in their small, hairlike projections
|
|
|
oboebocytes
|
crawling cells that deliver the nutrients to the rest of the body
|
|
|
gemmules
|
internal buds
food filled balls of amoebocytes surrounded by organic material & spicules |
|
|
regeneration
|
the regrowth of missing cells, tissues, or organs
|
|
|
hermaphrodites
|
produce both eggs and sperm
|
|
|
larva
|
immature stage of an animal
|
|
|
medusa
|
bell-shaped
specialized for swimming |
|
|
polyp
|
vase-shaped
specialized for sessile existence |
|
|
epidermis
|
outer cell layer on a cnidarian
|
|
|
gastrodermis
|
inner cell layer on a cnidarian
|
|
|
mesoglea
|
jellylike material between epidermis and gastrodermis
|
|
|
gastrovascular cavity
|
hollow gut in the center of the cnidarian with a single mough
|
|
|
tentacles
|
flexible extensions surrounding the mouth
|
|
|
cnidocytes
|
specialized cells used for defense and capturing prey
|
|
|
nematocyst
|
type of cnidocyte organelle with a long filament coiled up inside it
|
|
|
nerve net
|
diffuse web of interconnected nerve cells that controls nervous responses
|
|
|
planula
|
ciliated larva that develops from the planula
|
|
|
coral reefs
|
large rocklike formations built up by polyps
|
|
|
colloblasts
|
cells which secrete a sticky substance that binds to their prey
|
|
|
apical organ
|
sensory structure at one end of a ctenophore body that enables them to sense their orientation in the water
|
|
|
bioluminescence
|
production of light by means of a chemical reaction
|
