-
What kind of reproduction is most common in the Protista kingdom?
asexual (cell division)
-
1/2 of all protozoans are....
foraminiferans
-
Radiolarians are entirely marine and mostly...
planktonic
-
What is the most abundant kind of ciliophores?
tintinnids
-
How do tintinnids feed?
by using ciliated tentacles
-
What two things do Sarcomastigophoras use for movement?
pseudopodias and flagellas
-
hollow ball of cells
Blastula
-
For sponges, water enters through openings and circulates through the internal cavities and then circulates though a large excurrent pore known as...
osculum
-
Sponges are supported internally though a network of flexible ______ fibers
spongin
-
gelatinous layer that separates inner and outer body walls
mesoglea
-
baglike digestive tract that the central mouth leads to
gastrovascular cavity
-
batteries of microscopic structures that arm the tentacles
nematocysts
-
special cells that produce nematocysts
cnidoblasts
-
free swimming cnidarians with the main body above the tentacles (jellyfish)
medusae
-
sessile benthic cnidarians with main body below the tentacles (anemones)
polyps
-
What is closely related to the Cnidarians but doesn't have stinging cells?
Ctenophores
-
What kind of body symmetry do ctenophores have?
Radial
-
What kind of cells replace the nematocysts cells for Ctenophores?
sticky coloblast cells (that don't sting!)
-
harder sponge fibers comprised of either CaCO3 or SiO2
spicules
-
side of symmetry with the mouth
oral
-
opposite of the oral side
aboral
-
external longitudinal bands of cilia in ctenophores
ctenes
-
one plane of symmetry exists to make 2 mirror image halves consisting of anterior (head), posterior (rear), dorsal (top), and ventral (bottom).
bilateral body symmetry
-
Most Platyhelminthes are what and consist of what?
parasitic and consist of flukes and tapeworms
-
Where do nematodes live?
In bottom sediment throughout all depths
-
What is the most abundant multicellular animal in the marine benthic environment?
nematodes
-
Ectoprocta, Phorondia, and Brachiopoda are characterized by...
a true internal cavity called the coelom
-
Lingula has a consistent fossil history of
1/2 billion years
-
and hard shell around a soft body, a foot for locomotion anchorage and securing food are characteristics of....
unsegmented mollusks
-
sense organs near anterior (found in octupuses and squids)
Cephalization (brain)
-
What belongs to the Amphineura class?
Chitons
-
How many shells can Chitons have?
1,2, or 8
-
Mussels, clams, scallops and oysters have a two-piece hinged shell placing them in...
Bivalvia
-
type of larva found in annelid worms (stage 1)
trochophore
-
after growing a ciliated tissue (velum), annelid worms develop into stage 2 larva known as...
veliger
-
internal body fluid against which muscles work to provide shape changes to allow movement
hydrostatic skeleton
-
linear series of structural units (repeated body units)
metameres
-
(annelids) Polychaete's internal organs and body cavities are subdivided into..
metameres
-
external supppoting skeleton found in arthropods
exoskeleton
-
complex organic substance in exoskeletons
Chitin
-
What accounts for 75% of all living species identified so far?
Arthropods
-
All forms of echinoderms are ______ as adults
benthic
-
echinoderms are mostly characterized by a calcerous skeleton with....
external spines or knobs with 5-sided symmetry
-
Echinoderms unique internal water-vascular system hydraulically operates the...
numerous tube feet
-
cartilage rod the forms the central skeletal support of chordates (not vertebrates)
notochord
-
Urochordata and Cephalochordata are relatively _______ and completely marine
small
-
Urochordata includes animals such as benthic, filter-feeding ________ and planktonic, gelatinous ______
sea squirts and calps
|
|
