semi final exam Flashcards
(130 cards)
in porifera, what do you call the pores in its body?
ostia
composition of phylum porifera
pinacocytes
mesoglea
choanocytes
outer layer of flattened contractile cells in porifera
pinacocytes
inner non-living layer which contains a variety of specialized cells in porifera
mesoglea
collar cells which captures food from water flowing through channels in porifera
choanocytes
list down the classes of porifera
calcarea
hexactinellida
demospongiae
give one representative organism of calcarea
grantia
give one representative organism of hexactinellida
euplectella
give one representative organism of demospongiae
spongia
how many liters does a large sponge filter a day?
1500 liters
it ingest nutrients
choanocytes phagocytize
it digest nutrients
archaeocytes
Water entering the spongocoel is extruded via a large common opening called the ____________
osculum
2 body forms of cnidaria
polyp
medusa
germ layers of phylum cnidaria
epidermis
gastrodermis
outer covering / ectoderm of cnidaria
epidermis
lines gastrovascular cavity / endoderm in cnidaria
gastrodermis
middle nonliving jelly-like layer in cnidaria
mesoglea
list down the classes of cnidaria
hydrozoa
scyphozoa
cubozoa
anthozoa
give one representative organism of class hydrozoa
hydra
obelia
physalia
gonionemus
give one representative organism of class scyphozoa
aurelia
give one representative organism of class cubozoa
chironex (sea wasp)
box jellyfish
give one representative organism of class anthozoa
A. Sea anemone
1. Metridium (sea pen)
B. Corals
1. Meandrina (brain coral)
2. Gorgonia (sea fan)
3. Tubipora (pipe organ coral)
4. Actinodiscus (mushroom coral)
5. Acropora (staghorn coral)
what is the most endangered ecosystems in the world?
coral reefs