Invert II-prelab, worksheet, review, chart

Invert II-prelab, worksheet, review, chart -...

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Unformatted text preview: Invertebrate
II
Pre‐lab.

Due
at
the
start
of
lab.

(Pages
193­206)
 
 Name

 
 
 
 
 

GSI
&
Sect
#

 
 
 
 
 
Station
#
 
 
 AT
THE
END
OF
EACH
LAB
IS
A
REVIEW
AND
A
CHART
THAT
YOU
SHOULD
FILL
OUT.
 
 1.

To
what
phylum
and
class
does
a
starfish
belong
to?

Name
the
two
stomachs
a
starfish
possess?
 
 
 
 
 
 2.

For
a
cockroach,
outline
the
passage
of
food
from
the
mouth
out
to
the
anus.
 
 
 
 
 
 
 
 
 
 3.

Does
a
cockroach
have
a
closed
or
open
circulatory
system?

Explain
your
answer.
 
 
 
 
 
 
 4.

Trace
the
movement
of
an
oxygen
(O2)
molecule
from
the
outside
of
a
cockroach
into
its
abdominal
cavity.

 Trace
the
movement
of
a
CO2
molecule
from
the
abdominal
cavity
to
the
outside.

(Note
that
this
movement
does
 not
occur
in
the
circulatory
system).
 
 
 
 
 
 
 
 
 
 5.

Compare
and
contrast
holometabolous
and
hemimetabolous
development.

Give
an
example
of
each.
 
 
 
 
 
 
 
 6.

Describe
the
cuts/rips
required
in
the
cockroach
dissection.
 A63
–
Fall
2009
 
 
 Invertebrate
II
Notes
 A64
–
Fall
2009
 Invertebrate
II
Worksheet.

Due
at
the
end
of
your
lab.
 Name

 
 
 
 
 

GSI
&
Sect
#

 
 
 
 
 
Station
#
 
 
 1)

Make
a
quick
sketch
of
the
starfish.

Starfish
labels:

ambulacral
grooves,
ampullae,
hepatic
caeca,
pyloric
 stomach
&
cardiac
stomach
(sometimes
it
is
hard
to
distinguish
between
these
two),
gonads
(include
the
color
 distinction
between
males
and
females).


 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 2)

Compare
and
contrast
direct
and
indirect
development
and
give
an
example
of
an
arthropod
that
undergoes
 that
type
of
development.
 
 
 
 
 
 
 
 
 
 3)

List
at
least
five
examples
of
arthropod
diversity
that

are
on
display
in
the
lab
(common
names
are
OK).
 
 
 
 
 
 
 4)

In
the
space
below
make
a
drawing
of
the
crayfish.

Include
labels:
gills;
heart,
gonads
(make
sure
you
look
at
 both
sexes
and
draw
only
the
parts
that
are
different),
digestive
gland,
green
gland,
stomach
(contains
the
gastric
 mill),
intestine.
 
 
 
 
 
 
 
 
 
 
 
 
 A65
–
Fall
2009
 
 Worksheet
continued
on
the
backside
 
 
 5)

In
the
space
below
make
drawings
of
a
male
and
a
female
cockroach.

Include
labels:
crop,
digestive
caeca,
 gizzard,
intestine,
Malpighian
tubules,
sexual
structures
for
female
=
ovary,
ovarioles)
for
male
=
conglobate
 gland,
accessory
gland),
ventral
nerve
cord
and
tracheoles.
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 6)

Look
in
the
marine
tank.
It
will
be
station
#30
on
lab
exam
2.
You
need
to
identify
all
of
the
organisms
that
 belong
to
the
following
phyla.
List
common
name,
class,
subphylum,
and
phylum
as
appropriate.
 
 
 
 Echinodermata:
 
 
 
 
 
 
 Arthropoda:

 
 A66
–
Fall
2009
 STUDENT
REVIEW
SHEET
INVERT
II
 
 PHYLUM
ECHINODERMATA:

please
examine
the
demos
 A.

Starfish
 1)
external
structures:
central
disk,
arms
(rays)
oral
surface,
mouth,
ambulacral
grooves,
aboral
 surface,
madreporite,
spines,
dermal
branchiae,
pedicellariae
(use
a
dissecting
scope
for
the
last
two
 items)
 2)
internal
structures:
water‐vascular
system,
coelom,
stone
canal,
radial
canal,
tube
feet,
ampullae,
 calcareous
endoskeleton,
hepatic
caeca,
pyloric
&
cardiac
stomach,
gonads,
 3)
reproduction:
refer
to
reproduction
lab
 
 B.

Urchin
 1)
external
structures:
tests
(calcareous
endoskeleton
consists
of
a
series
of
intercalating
plates.
 2)
Sea
urchin
fertilization:
a
very
rapid
process,
examine
several
stages
(this
may
be
done
in
the
 reproduction
lab).
 
 
 PHYLUM
ARTHROPODA:

please
examine
the
demos
 A)
 Arthropod
development:
 
 1)

Incomplete
metamorphosis
(direct
or
gradual
development,
or
hemimetabolous)
e.g.,
cockroach


egg‐‐‐‐ ‐‐>
nymph‐‐‐‐‐‐>adult

 
 2)

Complete
metamorphosis
(holometabolous),
e.g.,
Drosophila
 
 

 egg‐‐‐‐‐‐>*larva‐‐‐‐‐‐>pupa‐‐‐‐‐‐>*adult

(*motile)
 B)

 external
features:
Metameric
(segmented),
Chitinous
exoskeleton,
growth
via
molting,
highly
cephalized,
 true
coelom
(replaced
by
hemocoel
),
,
jointed
legs,
head,
thorax,
abdomen
3
pairs
of
legs
(all
on
thorax)
1
 pair
of
antennae
 C)

 Class
Insecta,
fruit
fly
&
cockroach
 i)
external
features
 
 1.

Fruit
fly
(Drosophila),
adult
 **Head
with
mouth
parts,
incl.
proboscis,
3
simple
eyes;
2
compound
eyes
with
many
ommatidia
&
1
pair
of
 antennae
 **Thorax
with
wings
&
3
pairs
of
legs
 **Abdomen
 
 2.

Fruit
fly,
larval
stage
(maggots):
note
**Tracheal
tubules,
**Pair
of
reddish
spiracles
this
stage
lacks

real
 legs
 
 3.

Fruit
fly,
pupae
 
 4.

Cockroach,

 
 
 i)
external
features:
**Head,
antennae,
compound
eyes,
mouth

 parts,
**Thorax,
wings,
legs,
**Abdomen,
cerci,
spiracles
 
 ii)
internal
features:
open
**circulatory
system
=
dorsal
vessel,
hemocoel,

 haemolymph;
**Respiratory
system
=
spiracles,
trachea
&
tracheoles;
**Digestive
system
=
mouth,
 esophagus,
crop,
gizzard,
digestive
caecum,
midgut,
hindgut;
**Excretory
system
=

Malpighian
tubules;
 **Reproductive
system
=
female‐‐ovary
and
ovarioles,
male‐‐testes
(not
easily
seen),
conglobate
gland;
 **Nervous
system
=
nerve
cord
&
ganglia
 D.

Class
Crustacea
 
 1.

Crayfish,

 i)
external
features:
chelae,

antennae,
walking
legs
 ii)
internal
features:
Respiratory
system
=
gills;
Circulatory
system
=
heart,
pericardial
sinus
(blood
 carries
O2
and
CO2,
in
contrast
to
insects,
but
uses
the
copper‐containing
compound
hemocyanin);
 Reproductive
system
=
female‐‐ovaries
&
male‐‐testes,
specialized
swimmerets;

Digestive
system
=
 mouth,
stomach,
gastric
mill,
intestine,
digestive
glands;
Excretory
system
=
green
glands
 A67
–
Fall
2009
 
 INVERT
I Examples
 
 
 Symmetry Respiratory
system,

 pigments
 Circulatory
system
 
 
 Skeletal
system
 Coelom
 Degree
of
cephalization Sexual
reproduction
 
 Asexual
reproduction.
 Metamerism Excretory
system
 
 Metamorphosis
 
 Nervous
system
 

 #
of
embryonic
germ
 layers
 locomotion
 
 
 other
notes,
digestion,
etc.
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 Echinodermata Arthropoda Crustacea Insecta A68
–
Fall
2009 ...
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