Animal Diversity

Topics: Arthropod, Cnidaria, Phylum Pages: 11 (1308 words) Published: February 13, 2011
ANIMAL DIVERSITY

Systematics
•  study of biological diversity and its origins

Its arms
TAXONOMY   focus on
properly describing, identifying, classifying, and naming of organisms.

CLASSIFICATION
  focus on placing organisms within groups that show their relationships to other organisms.

Writing
a
scientific
name.

•  Kimberlicus
beltranus
 •  Kimberlicus

beltranus


The Protozoans

Protozoa


Alveolates

Ciliates
 Sporozoans
 Dinozoans


Amoeboids

Amoebozoa
 Cercozoa


Discicristates
 Parabasala
 Euglenozoa


Alveolata


Ciliophora


Sporozoa


Dinozoa


Didinium
sp.
 ►body is barrel-shaped with cilia restricted to 2 girdles ► the anterior has a proboscis elevation at the tip is an expansible cytostome ►macronucleus is Cshape ► carnivorous


Paramecium
sp.

•  Body
is
slipper‐shape
with
a
 blunt
anterior
and
pointed
 posterior
region
 •  Body
is
covered
by
a
firm
 pellicle
and
a
cilia
used
for
 locomotion,
protection
and
 sweeping
of
food
materials
 •  Food
materials
comes
in
thru
 the
oral
groove
leading
to
the
 cytopharynx
 •  Fecal
materials
are
expelled
 thru
a
cytoproct
found
 posteriorly


Vorticella
sp.

•  Bell‐shaped
 •  2
rows
of
cilia
are
confined
 to
the
oral
region
 •  Macronucleus
is
worm‐like
 while
micronucleus
is
dot‐ like
 •  Attached
to
the
body
is
a
 long
stalk
with
contractile
 fibers
or
myonemes


Stentor
sp.

•  Trumpet‐shape
ciliate
 •  Macronucleus
is
 monoliform
or
bead
 like
 •  May
either
be
 attached
to
substrate
 or
free‐
swimming


Phylum
Dinozoa

•  Dinoflagellates:
single‐celled
organisms

 •  Occur
as
motile
cells
with
2
flagella
 •  Possess
equatorial
and
posterior
longitudinal
 flagellum
located
in
grooves
 •  Body
is
either
naked
or
covered
by
cellulosic
 plates
or
valves
or
by
cellulose
membrane


Ceratium
sp.

•  Lives
in
freshwater
 and
marine
habitats
 •  Girdle
divides
it
into
 anterior
epicone
and
 posterior
hypocone
 •  Contains
a
centrally
 located
cilia
and
 numerous
 chromatophores


Peridinium
sp.

•  Armored,
pigmented,
 top‐shaped
with
a
 longitudinal
and
 transverse
flagella
 •  The
cells
may
be
 generally
round
to
oval‐ shaped
or
flattened,
 with
a
convex
dorsal
 surface
and
a
concave
 ventral
surface.

 •  Solitary
and
marine


Apicomplexa

•  Presence
of
apical
complex
 •  This
'apical
complex'
includes
secretory
 organelles
known
as
micronemes
and
 rhoptries,
polar
rings
composed
of
 microtubules,
and
in
some
species
a
conoid
 which
lies
within
the
polar
rings


Sporozoa

•  Possess
a
complex
of
distinctive
organelles
at
 the
apical
end
 •  Possess
a
spore‐like
infective
stage
and
lack
 cilia,
flagella
or
pseudopodia
as
adults


Gregarina
sp.


•  Parasites
of
annelids
 and
arthropods
 •  Epimerite
+
 protomerite
+
 deutomerite
–
 cephalont
 •  protomerite
+
 deutomerite
–
sporont
 •  Syzygy‐
union
of
 sporonts



Plasmodium
sp.

•  Causative

agent
of
malaria
 and
transmitted
thru
a
bite
 of
Anopheles
sp
 •  Grow
and
reproduce
by
 sexual
fission
inside
the
host
 RBC
 •  Sexual
reproduction
may
 occur
from
fusion
of
 gametes
 •  Microgametocyte
is
sausage
 shape
while
 macrogametocyte
is
 crescent
shape


Foraminifera

•  Largely
benthic,
marine
 species
possesssing
a
 calcareous
test
that
is
 usually
multi‐chambered
 •  Long,
delicate
and
 anastomosing
 reticulopodia
extends
 from
the
protruded
 cytoplasm


Radiozoa

•  Marine
planktonic
species
 with
spherical
bodies
and
 radiating
axopods
 •  Organic
capsule
wall
 separates
a
central
cortex
 from
extracapsular
cytoplasm
 •  Have
complex
skeleton
of
 silica
or
strontium
sulfate
 organized
in
the
form
of
 lattice
spheres
or
radiating
 spines


Amoebozoa

‐
Movement
is
 via
plasma
 membrane


Parabasala

‐
The
reference
 is
to
a
 specialized
 organelle
that
is
 intimately
 associated
with
 the
basal
bodies
 in
this
phylum.


PORIFERA


Calcarea


Sclerospongia


Demospongia


Hexactinellida


PHYLUM...
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