Protozoans and Invertebrates
Card Set Information
Protozoans and Invertebrates
Protozoans Invertebrates Marine Ecology
Chapter 6 study notes.
What kind of reproduction is most common in the Protista kingdom?
asexual (cell division)
1/2 of all protozoans are....
Radiolarians are entirely marine and mostly...
What is the most abundant kind of ciliophores?
How do tintinnids feed?
by using ciliated tentacles
What two things do Sarcomastigophoras use for movement?
pseudopodias and flagellas
hollow ball of cells
For sponges, water enters through openings and circulates through the internal cavities and then circulates though a large excurrent pore known as...
Sponges are supported internally though a network of flexible ______ fibers
gelatinous layer that separates inner and outer body walls
baglike digestive tract that the central mouth leads to
batteries of microscopic structures that arm the tentacles
special cells that produce nematocysts
free swimming cnidarians with the main body above the tentacles
sessile benthic cnidarians with main body below the tentacles
What is closely related to the Cnidarians but doesn't have stinging cells?
What kind of body symmetry do ctenophores have?
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
side of symmetry with the mouth
opposite of the oral side
external longitudinal bands of cilia in ctenophores
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?
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....
sense organs near anterior
(found in octupuses and squids)
What belongs to the Amphineura class?
How many shells can Chitons have?
1,2, or 8
Mussels, clams, scallops and oysters have a two-piece hinged shell placing them in...
type of larva found in annelid worms (stage 1)
after growing a ciliated tissue (velum), annelid worms develop into stage 2 larva known as...
internal body fluid against which muscles work to provide shape changes to allow movement
linear series of structural units (repeated body units)
(annelids) Polychaete's internal organs and body cavities are subdivided into..
external supppoting skeleton found in arthropods
complex organic substance in exoskeletons
What accounts for 75% of all living species identified so far?
All forms of echinoderms are ______ as adults
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)
Urochordata and Cephalochordata are relatively _______ and completely marine
Urochordata includes animals such as benthic, filter-feeding ________ and planktonic, gelatinous ______
sea squirts and calps