Biology II Lab (Quiz #3)
by its embryonic development, in which the first opening in the embryo becomes the mouth. ( eight-cell stage/ spiral cleavage)
the first opening (the blastopore) becomes the anus. (radial cleavage/ forming digestive tube)
What phylum are roundworms?
Characteristics of roundworms ?
Nonsegmented pseudocoelomates covered by a tough cuticle.
What are the important role of decompostion?
nematodes accelerate the decomposition process. Their feeding recycles minerals and other nutrients from bacteria, fungi, and other substrates and returns them to the soil where they are accessible to plant roots.
Name the parasite of Nematoda - roundworm in humans and plants?
Trichinella spirilis-> endoparasites
Most species-rich and morphologically diverse group in the lophotrochozoa is?
Clade of protostome animals within the Spiralia is?
Lophotrochozoa (Ex. Trochophore larvae)
Which animals can be found in the Phylum of Mollusks?
snails, oyster, octopus, scallops, slugs
what are the characteristics of Mullusks?
marine, freshwater, and terrestrial
have four lineages
all have similar body plan ( muscular foot, visceral mass, and a mantle)
rasping organ= radula
Muscular foot is for?
viceral mass contain?
most internal organs
a mantle is?
the tissue that drapes over the visceral mass and secretes the shell
The 4 lineage are?
Polyplacephora, Gastropods, Bivalva, and cephalopods
chitons have 8 calcium carbonate plates along their dorsal side, has a radula to scrape of algae and reproduce sexual and external. Belong to the class of?
Snails, slugs, and nudibranchs, which have a large muscular foot on their ventral side (move by gliding and lack of shell) are under which phylum?
gastropods shell characteristics?
exoskeleton- for protection, secreted by special organ- mantle, can be righ or left handed.. different shapes.
Clams, mussels, scallops, oyster- two separate shells that are hinged, reproduce sexially, and live in ocean and some are in fresh water are?
squid, nautilus, octopuses, which have a well-developed head and a foot modified to form tentacles. Also have large brains and eyes with sophisticated lenses and reduced shell are?
Segmented worms, live in the sea, freshwater, and damp soil are in which phylum?
Phylum of Annelids
Annelids phylums are divided into which classes?
earthworm are in which class?
oligochaeta characteristics are?
bristle made of chitin called chaetae
earthwaorm eath the wai through the soil which does what?
extract nutrients as the soil maves through the alimentary canal. which help the earth, making earthworms valuable to
class polychaeta (segmented worms- marine mostly) characteristics?
wormlike, member of Polychaeta posses paddlelike parapodia (almost feet) that function as gilld and aid in locomotion.
leeches belong to what phylum?
Hirudines phylum characteristics?
can be predators to protists
secrete an anesthetic to numb they prey and an anticoagulant
have a segmented body and jointed appendages, a usually chitinous exoskeleton molted at intervals, and a dorsal anterior brain connected to a ventral chain of ganglia
which are the 3 phylum of arthropods?
arachnida, crustacea, and unaramia
insecta class described which animal?
insecta class means?
jointed appendages, antenna, molt
diplopod class described which animal?
chilopod class described which animal?
unaramia has 3 classes which are?
centipede, millipede, insects belongs to which phyla under arthropods?
crustacea phylum has which type of animals?
lobsters and crabs
crustacea class means?
jointed appendages but boracic, antenna, mot
Arachnida phyla are what type of animals?
arachnida class means?
no antenna, molt, jointed appendages
unaramia, arachnids, and crustaceans are ?
the following subphylum Chelicerata, merostonata, crustacea, hexapoda, and insecta belongs to which phylum?
such as spiders, scorpions and horse crab belongs to which subphylum and phylum?
Chelicerata and arthropoda
horseshoe crab belong to which phylum?
characteristics class characteristics?
have modified mouth
mouth parts: chelicerae -fangs / pedipalps -feelers
spiders fangs are called?
fangs- all spiders are poisonous, some just can't penetrate the skin
spiders feelers are called?
pedipalps -very sort, right up front
arachnids Phalangida type are?
daddy longlegs, not spiders, not poisons have no fangs, are herbivores chew on leaves
which subphylum are the crayfish, rollie-pollies, shrimps, lobsters?
unirania which contain which type of animal
centipedes and millipedes
fangs are modified legs up under the head
can get very lager in the tropical areas
1 set of leg per segment
all are junk feeder
make cyanide gas when threatened
2 set of leg per segment
insects which includes grasshopper, butterflies, beetles, and many others
hexapoda has 3 body regions
hexapoda can fly by
two pair of wings
look like something else as a protective measure
examples of mimicry
Coral snake is poisonous, kind snake is not
–Not true mimicry–
In order for the mimicry to be successful the poisonous snake has to
be more numerous than the mimic
–Probably warning colors
•Blending into evnvironment•Most common type
Ex: walking stick or preying mantis
–Walking stick to protect from predators
–Preying mantis is predator but uses it for stealth in hunting
population of model has to be higher than of mimic
found in many butterflies
ex. monarch and viceroy
The Viceroy caterpillar will mimic both
the Monarch and the Queen butterfly depending on which is more populous in the area
fly and wasp mimic the what?
do both model and mimic are toxic
don't know which is which
have developed the same body, colors, and toxicity
2 main type insect can mimic
pigment and structure
in the color, pigment which is the molecule within the cuticle that is that specific color
-white- uric acid (waste production)
-brown and black- melanin
-yellow, red, orange- pigments from food they eat
structure is develop by
surface cuticle itself, color reflect light off the shell and ridges
phylum echinoderms have which animals?
echinoderm and chordates
Chordates and echinoderms share characteristics of deuterostomes, which are?
–Development of the coelom from the archenteron
–Formation of the mouth at the end of the embryo opposite the blastopore
slow moving or sessile marine animals
sea star have
a water vascular system
how does the water vascular system works?
a network of hydraulic canals branching into tube feet that function in locomotion, feeding, and gas exchange
echinoderms has 6 classes which are
sea stars belongs to which class?
they have multiples arms radiation from a disk
sea urchins and sand dollars, from asteroidea class, have ?
have five rows of tube feet that function movement
Phylum of chordata can be characterized by
a dorsal hollow nerve cord
post anal tail
phylum of choradata has 3 subphylum which are?
- subphylum Urochordata
- subphylum Cephalochordata
- subphylum vertebrata
the subphylum of vertebrate has 7 classes which are
phylum of urochordata characteristic and animals
tunicates or sea squirts
sessile or planktonic marine organism, whose larvae losses general chordate forms
stucture of adult is highly modifiedIncludes sieve-like basket perforated w/pharyngeal gill slits, surrounded by cellulose sac called a tunic
Small, fishlike marine chordates that burrow in sand or mud belong to which subphylum and phylum?
subphylum cephalochordate and phylum of chordata