Lab Practical One Flashcards
Genus of class Turbellaria
Dugesia
Genus of class Trematoda
Fasciola
Schistosoma
Clonorchis
Genus of class Cestoda
Taenia
Habitat of phylum Platyhelminthes
Marine/aquatic
How many germ layers does Platyhelminthes
Have
Three
What are the germ layers of Platyhelminthes
Ectoderm, endoderm, and mesoderm
Class of phylum Platyhelminthes
Class Turbellaria
Class Trematoda
Class Cestoda
what does acoelomates mean
no body cavity
do Platyhelminthes have body cavities
no
what type of symmetry do Platyhelminthes have
bilateral symmetry
what does monoecious mean
contain both female and male sex organs
are Platyhelminthes monoecious
yes
describe digestive system of platyhelminthe
no complete digestive tract, contains gastrovascular cavity
what are the muscles in platyhelminthes
circular muscle, longitudinal muscle, dorso-ventral muscle
when a circular muscle constricts what happens
becomes thinner and longer
when longitudinal muscle contracts what happens
short and thick
what type of lifestyles do Platyhelminthes have
free living and parasitic
which Platyhelminthes are free living
class turbellaria (dugesia)
which Platyhelminthes are parasitic
class trematoda, class cestoda
what is a gravid
a mature proglottid
what do gravids do when they mature
they brake off and contaminate areas
tape worms have heads called what
scolex
what are the three basic concepts in microscopy
resolving power, magnification, contrast
resolving power
the capacity of the microscope optics to distinguish or separate two adjacent objects or points from one another
magnification
the degree to which an image in enlarged
contrast
the ability to see structural detail against the background
ocular lenses use what magnification
10x
gap junctions
cells joining and sharing cytoplasm
what is in extracellular matrix
carbohydrates and proteins
what proteins are in extracellular matrix
collagen, fibrin and elastin
nucleoplasm
in nucleus
cytoplasm
in cell
protoplasm
both cyto and nucleoplasm
symplasm
multiple cells sharing plasm
function of cytoskeletion/ microtubules
maintain cell structure
the four basic tissue types
epithelial, connective, muscle and nervous
tissue
a group of similar cells performing a similar function
function of epithelial cells
cover or line body organs
three types of epithelial cells
squamous, cuboidal, columnar
squamous epithelial cells are found where
in multiple layers covering the body and as one layer lining blood vessels
characteristics of squamous
round in shape with a centrally located nucleus
characteristics of cuboidal
cube shaped with centrally located nucleus
where cuboidal cell found
lining ducts of the body, often secretory tissue
characteristics of columnar
rectangular with a basally located nucleus
where columnar found
lining intestines and respiratory passages
function of connective tissue
binds, supports, cushions body organs, transports materials
4 types of connective tissue
hyaline cartilage, adipose, bone, and blood
function of hyaline cartilage
to protect and support organs
function of adipose
cushion organs and to store lipid as a potential source of energy
function of bone
support and protect the body and to assist in motion
function of blood
transport a variety of substances throughout body
muscle tissue is composed of
myofibers
three types of muscle tissue
skeletal, cardiac, and smooth
function of skeletal
animate the skeleton and create heat
characteristics of skeletal
elongate and appear striated due to fiber arrangement , multinucleated
function of cardiac muscle
to propel blood into the circulatory system
characteristics of cardiac
striated, mononucleate, branching and terminate in distinct bands called intercalated discs
location of smooth muscle
in the walls of many internal organs, blood vessels,
function of smooth
propel food through GI tract and to assist in maintaining blood pressure
characteristics of smooth
not striated, tapering at ends
function of nervous tissue
receive both internal and external stimuli and to transmit these as impulses to various parts of the body
phylum Protista are a weird phylum bc
act like plants, fungus and animals
phylum chlorophyta
volvox
characteristics of volvox
plant like, photosynthetic, colonial, flagellated by 2, spherical, unicellular, autotrophic
mobility of volvox
2 flagella
phylum retortamonada
class diplomonadea, giardia
giardia characteristics
parasite
resting stage (cyst)/ feeding stage (trophozoite)
flagellated
unicellular
mobility of giardia
flagella
phylum axostylata
class parabasalea, trichomonas
characteristics of trichomonas
modified cytoskeleton, parasite, unicellular
phylum euglenozoa
class euglenoidea, euglena class trypanosomatidea, trypanosoma
characteristics of euglena
free living and parasitic mixotrophic contain chloroplasts flagellated unicellular some membrane and proteins constitutes a pellicle
mobility of euglena
flagella
characteristics of trypanosoma
blood parasite, biting fly transmits
phylum apicomplexa
class coccidea, plasmodium
plasmodium characteristics
malaria, blood parasite, trophozoite in slides
life cycle split between human and mosquito
phylum ciliophora
paramecium, Stentor, vorticella, didinium
characteristics of paramecium, Stentor, vorticella and didinium
unicellular and cilia
some of the most complex cells among eukaryotes
amoeba and difflugia
move by pseudopodia
phylum sarcodina
amoeba and difflugia
phylum porifera are
sponges
habitat of porifera
marine and aquatic
type of digestion for porifera
filter feeders
movement of porifera
sessile, fixed position
do porifera have true tissues
no
do porifera have organs or organ systems
no
porifera: unicellular or multi
multi
choanocytes
feeding cells which contain flagella that produce current by beating
ameobocytes
food redistribution
sclerocytes
produce skeleton that give sponge structure
pinacocytes
covering cell
spicules
help give sponge its shape
metazoans
multicellular animals
sponges reproductive system
monoecious, reproduce sexually and asexually
calcareous spicules
contain calcium carbonate
siliceous spicules
contain silicone dioxide
sponging fibers
contain proteinacious
phylum porifera has how many classes
three
class calcarea
scypha, leucosolenia
class hexactinellida
euplectella
class demospongiae
spongia
scypha has what body
syconoid
leucosolenia contains what spicules
sponging and calcareous
euplectella has what spicules
siliceous
spongia has what body form
leuconoid
three types of sponge bodies
asconoid, syconoid and leuconoid
habitat of phylulm cnidaria
primarily marine but some aquatic
symmetry of cnidaria
radially symmetrical
cnidarian are first animals to display a
a tissue level of organization
diploblastic
derived from two tissue layers
dimorphic
two stages
what are the two stages of cnidaria
medusae and polyp
what stage is motile for cnidaria
medusae
what stage is sessile for cnidaria
polyp
what is the digestion system like for cnidaria
one gut, one opening, no complete digestion system, has gastrovascular cavity
what are the basic cell types in cnidaria
epitheliomuscular cell and gastrodermal cell
what sits between epitheliomuscular and gastrodermal cell
mesoglea
the germ layer for cnidarian consists of
ectoderm and endoderm
ectoderm
rise to epidermis cell
endoderm
rise to gastro cell
when is ectoderm and endoderm formed in cnidaria
created in early stages of development
cnidocytes
contain nematocysts
nematocysts are used for
prey capture and defense
how many classes of cnidaria
three
class hydrozoa
hydra, obelia, gonionemus, physalia
class scyphozoa
aurelia
class anthozoa
metridium, meandrina, gorgonian, tubipora
classification
the ordering of organisms into groups based on their relationships
phylogeny
evolutionary history of a group of organisms
homology
any character or structure that is similar in two or more organisms due to common ancestry
analogy
any character that is similar because two organisms evolved under similar environmental pressures
taxonomy
the study of the basis, principles, procedures, and rules of classifications
cladistics
phylogenetics
places organisms into groups based on their recency of common descent
synapomorphies
shared derived character
symplesiomorphies
shared ancestral conditions
cladograms
phylogenetic trees
a graphical demonstration of the phylogenetic relatedness of organisms depicted at various taxonomic levels