The appendages of arthropods
are
1. found only on the
head.
2. hard and
immovable.
3. jointed and extend
from the body wall.
4. divided into six
branches.
1
2
3
4
5
25%
1
25%
25%
2
3
25%
4
What substance found in the skeleton of a
desert-dwelling beetle is likely to be absent
from the skeleton of an aquatic beetle?
25% 25%
25%
25%
1. chitin
2. wax
3. silk
4. protein
1
2
3
4
5
1
2
3
4
Figure 28–1 shows the respiratory system of a
grasshopper. The structures labeled X are called
25%
1.
2.
3.
4.
1
tracheal tubes.
Malpighian tubules.
book lungs.
book gills.
2
3
4
5
1
25%
2
25%
3
25%
4
The structures labeled X in
Figure 28–1 are filled with
1.
2.
3.
4.
1
water.
blood.
air.
nitrogenous
wastes.
2
3
4
5
25%
1
25%
25%
2
3
25%
4
Which of the following habitats
do arthropods occupy?
1.
2.
3.
4.
1
the sea
the land
the air
all of the above
2
3
4
5
25%
1
25%
25%
2
3
25%
4
Typical primitive arthropods had
bodies that were composed of
1.
2.
3.
4.
1
many segments.
three segments.
one segment.
no segments.
2
3
4
5
25%
1
25%
25%
2
3
25%
4
The evolution of arthropods has
led to
1.
more body segments and more
specialized appendages.
fewer body segments and more
specialized appendages.
more body segments and fewer
specialized appendages.
fewer body segments and fewer
specialized appendages.
2.
3.
4.
25% 25% 25% 25%
1
1
2
3
4
5
2
3
4
What does molting enable
arthropods to do?
1.
2.
3.
4.
1
to breathe
to reproduce
to grow
to eat
2
3
4
5
25%
1
25%
25%
2
3
25%
4
Which of these events is the first to
happen when an arthropod molts?
1.
2.
3.
The animal fills with air or fluids.
A new skeleton is secreted.
The animal pulls itself out of the original
skeleton.
Skin glands digest the inner part of the
skeleton.
4.
1
2
3
4
5
25% 25% 25% 25%
1
2
3
4
An arthropod is vulnerable to predators
during the molting period because
1.
it must come out of hiding to
molt.
its new exoskeleton is soft.
molting cannot occur without
the assistance of predators.
predators are more
numerous during this period.
2.
3.
4.
1
2
3
4
5
25%
1
25%
25%
2
3
25%
4
Which of the following invertebrates
is NOT a crustacean?
1.
2.
3.
4.
1
horseshoe crab
fiddler crab
barnacle
crayfish
2
3
4
5
25%
1
25%
25%
2
3
25%
4
Arthropods are classified based on
the number and structure of their
1. eyes and wings.
2. body segments
and appendages.
3. muscles and
bones.
4. gills and hearts.
1
2
3
4
5
25%
1
25%
25%
2
3
25%
4
Which appendages are especially important
in the classification of arthropods?
1.
2.
3.
4.
1
mouthparts
legs
antennae
swimmerets
2
3
4
5
25%
1
25%
25%
2
3
25%
4
An example of a chelicerate is a
1.
2.
3.
4.
1
lobster.
centipede.
crayfish.
spider.
2
3
4
5
25%
1
25%
25%
2
3
25%
4
Insects are classified as
1.
2.
3.
4.
1
crustaceans.
arachnids.
uniramians.
chelicerates.
2
3
4
5
25%
1
25%
25%
2
3
25%
4
The easiest way to tell whether an
arthropod is an insect or a spider is to
1. observe its color.
2. count its legs.
3. count its
swimmerets.
4. measure the
length of its body.
1
2
3
4
5
25%
1
25%
25%
2
3
25%
4
One similarity between a spider and a
crayfish is that both animals have
1. chelicerae and
pedipalps.
2. two pairs of
antennae.
3. chelipeds and
mandibles.
4. a cephalothorax and
an abdomen.
1
2
3
4
5
25%
1
25%
25%
2
3
25%
4
The respiratory organ in
terrestrial chelicerates is the
1.
2.
3.
4.
1
chelicera.
book lung.
book gill.
pedipalp.
2
3
4
5
25%
1
25%
25%
2
3
25%
4
Spiders feed by
1.
swallowing their prey
whole.
biting off and swallowing
pieces of their prey.
sucking up prey tissues
that have been liquefied
by enzymes.
sipping nectar through a
tubelike mouthpart.
2.
3.
4.
1
2
3
4
5
25%
1
25%
25%
2
3
25%
4
How many pairs of legs are there on
most body segments of a centipede?
1.
2.
3.
4.
1
one
two
five
six
2
3
4
25%
5
1
25%
25%
2
3
25%
4
If a butterfly touches sugar water with one of its legs, it
usually will begin to feed. If it touches salt water, it usually
will not feed. The most likely explanation for this difference
in response is that butterflies
1.
cannot tell the difference between
sugar water and salt water.
can distinguish sugar water from salt
water by sight.
use the ears behind their legs to
distinguish sugar water from salt
water.
have chemical receptors for taste on
their legs.
2.
3.
4.
1
2
3
4
5
25%
1
25%
25%
2
3
25%
4
Which of the following is NOT a reason
for the evolutionary success of insects?
1.
The ability to fly has allowed
insects to colonize new
habitats.
Insects as a group are not
very diverse because there
are relatively few species.
Insects use many sense
organs to respond to stimuli.
Many insects have a life
cycle in which the young are
very different from adults.
2.
3.
4.
1
2
3
4
5
25%
1
25%
25%
2
3
25%
4
The compound eyes of insects
1. are made of many lenses.
2. are located on the thorax.
3. produce an image that is more
detailed than what humans
see.
4. are not very good at detecting
movement.
25%
1
1
2
3
4
5
25%
25%
2
3
25%
4
The body of an insect is divided
into a
1. head and a thorax.
2. head and a
cephalothorax.
3. head, a thorax, and
an abdomen.
4. cephalothorax and
an abdomen.
1
2
3
4
5
25%
1
25%
25%
2
3
25%
4
An insect can detect minute movements in
its environment by using its compound eyes
and its
25% 25%
25%
25%
1. Malpighian
tubules.
2. tracheal tubes.
3. chelicerae.
4. sensory hairs.
1
2
3
4
5
1
2
3
4
Which of the following is NOT a
stage of complete metamorphosis?
1.
2.
3.
4.
1
nymph
egg
larva
pupa
2
3
4
5
25%
1
25%
25%
2
3
25%
4
An example of an insect that undergoes
incomplete metamorphosis is the
1.
2.
3.
4.
1
moth.
bee.
ladybug.
chinch bug.
2
3
4
5
25%
1
25%
25%
2
3
25%
4
One difference between a nymph
and a larva is that a nymph
1.
2.
can fly, but a larva cannot.
is specialized for
reproduction, but a larva is
not.
resembles an adult of the
same species, but a larva
does not.
molts to become a pupa, but
a larva molts to become an
adult.
3.
4.
1
2
3
4
5
25%
1
25%
25%
2
3
25%
4
In most ant societies, egg-laying
is performed by
1. the workers.
2. one queen.
3. hundreds of
queens.
4. reproductive
males.
1
2
3
4
5
25%
1
25%
25%
2
3
25%
4
Honeybees use dances to
1. lure insects of other
species.
2. signal the death of a
member of the
colony.
3. attract mates.
4. convey information
about food sources.
1
2
3
4
5
25%
1
25%
25%
2
3
25%
4
When a honeybee performs the waggle
dance, the direction of the food is indicated
by the
1. direction of the straight run.
2. number of straight runs in the
dance.
3. number of circles in the dance.
4. frequency with which the bee
changes direction.
1
2
3
4
5
25%
1
25%
25%
2
3
25%
4
To determine whether an animal is a
cnidarian or an echinoderm, you should
1. determine its habitat.
2. find out if it has a
backbone.
3. study its embryonic
development.
4. discover whether it
is aquatic or
terrestrial.
1
2
3
4
5
25%
1
25%
25%
2
3
25%
4
In echinoderms, body parts
usually occur in multiples of
1.
2.
3.
4.
1
two.
seven.
three.
five.
2
3
4
5
25%
1
25%
25%
2
3
25%
4
Echinoderms are like
vertebrates in that echinoderms
1. are bilaterally
symmetrical as
larvae and as adults.
2. are deuterostomes.
3. have cephalization.
4. have an anterior end
and a posterior end.
1
2
3
4
5
25%
1
25%
25%
2
3
25%
4
In most species of echinoderms,
respiration occurs mainly in the
1.
2.
3.
4.
1
tube feet.
madreporite.
ring canal.
radial canals.
2
3
4
5
25%
1
25%
25%
2
3
25%
4
The skeleton of an echinoderm
is an
1.
exoskeleton made of
calcium carbonate.
exoskeleton made of
chitin.
endoskeleton made of
calcium carbonate.
endoskeleton made of
chitin.
2.
3.
4.
1
2
3
4
5
25%
1
25%
25%
2
3
25%
4
In an echinoderm, the structure that
operates like a living suction cup is the
1.
2.
3.
4.
1
madreporite.
tube foot.
stomach.
nerve ring.
2
3
4
5
25%
1
25%
25%
2
3
25%
4
The water vascular system of echinoderms
is involved with each of the following body
functions EXCEPT
25% 25%
25%
25%
1. respiration.
2. circulation.
3. movement.
4. reproduction.
1
2
3
4
5
1
2
3
4
Which of the following statements about the
water vascular system of echinoderms is
correct?
1.
The ring canal connects to the
madreporite.
The madreporite forms a circle around
the animal’s mouth.
The tube feet are attached to the ring
canal.
Each radial canal opens to the outside.
2.
3.
4.
1
2
3
4
5
25%
1
25%
25%
2
3
25%
4
Which structure is part of an
echinoderm’s water vascular system?
1.
2.
3.
4.
1
skin gill
anus
madreporite
stomach
2
3
4
5
25%
1
25%
25%
2
3
25%
4
The echinoderms that look like
warty, moving pickles are
1.
2.
3.
4.
1
sea urchins.
sea cucumbers.
sea stars.
feather stars.
2
3
4
5
25%
1
25%
25%
2
3
25%
4
Sea lilies and feather stars
1.
make up the oldest class of
echinoderms.
feed by scraping algae from
rocks.
are the only echinoderms
that live in fresh water.
are disk-shaped
echinoderms that often
burrow into the sand.
2.
3.
4.
1
2
3
4
5
25%
1
25%
25%
2
3
25%
4
The plates of the endoskeleton are reduced
and contained inside a soft, muscular body
wall in
25% 25%
25%
25%
1. sand dollars.
2. sea cucumbers.
3. sea urchins.
4. brittle stars.
1
2
3
4
5
1
2
3
4
Two echinoderms that are in the
same class are
1. brittle stars and sea
stars.
2. sea stars and sea
cucumbers.
3. sea cucumbers and
sea urchins.
4. sea urchins and
sand dollars.
1
2
3
4
5
25%
1
25%
25%
2
3
25%
4
In the Great Barrier Reef of Australia, extensive
areas of coral have been destroyed by the crown
of thorns, which is a type of
1.
2.
3.
4.
1
sea cucumber.
sea urchin.
sea star.
sea lily.
2
3
4
5
25%
1
25%
25%
2
3
25%
4
One of the common features of arthropods
is a tough endoskeleton.
_________________________
1. True
50%
50%
2. False
1
2
3
4
5
1
2
Living arthropods generally have fewer body
segments than ancestral arthropods.
_________________________
1. True
50%
50%
2. False
1
2
3
4
5
1
2
The process in which an arthropod sheds its
skeleton and manufactures a larger one is called
flexing. _________________________
1. True
2. False
1
2
3
4
50%
5
1
50%
2
The three major groups of arthropods are
crustaceans, chelicerates, and uniramians.
_________________________
1. True
50%
50%
2. False
1
2
3
4
5
1
2
In a crayfish, the carapace is the part of the
skeleton that covers the abdomen.
_________________________
1. True
50%
50%
2. False
1
2
3
4
5
1
2
If an arthropod has antennae and its body is divided into a
cephalothorax and an abdomen, the arthropod is classified
in the group called chelicerates.
_________________________
1. True
2. False
1
2
3
4
50%
5
1
50%
2
In a crayfish, the chelipeds have large
claws. _________________________.
1. True
2. False
1
2
3
4
50%
5
1
50%
2
The mouthparts of insects consist of three
pairs of appendages, including a pair of
chelicerae. _________________________
1. True
50%
50%
2. False
1
2
3
4
5
1
2
If an insect exists as a nymph before becoming an
adult, the insect goes through complete
metamorphosis. _________________________
1. True
2. False
1
2
3
4
50%
5
1
50%
2
When a honeybee performs the round dance, it indicates
that a food source has a low energy value by changing
direction less frequently than it would if the food were high
quality. _________________________
1. True
2. False
1
2
3
4
50%
5
1
50%
2
An adult starfish has radial symmetry.
_________________________
1. True
2. False
1
2
3
4
50%
5
1
50%
2
Echinoderms are animals in which the
blastopore develops into an anus.
_________________________
1. True
50%
50%
2. False
1
2
3
4
5
1
2
An echinoderm’s water vascular system
opens to the outside through the ring canal.
_________________________
1. True
50%
50%
2. False
1
2
3
4
5
1
2
When an echinoderm exerts a pulling force on an
object, muscles pull the centers of the tube feet
upward. _________________________
1. True
2. False
1
2
3
4
50%
5
1
50%
2
Some sea urchins defend themselves using
long, sharp arms.
_________________________
1. True
50%
50%
2. False
1
2
3
4
5
1
2
Participant Scores
0
0
Participant 1
Participant 2
0
0
0
Participant 3
Participant 4
Participant 5
In arthropods, ganglia are located along a
ventral _________________________.
1
2
3
4
5
0 of 5
Each segment in the body of a trilobite had
two ____________________ attached to it.
1
2
3
4
5
0 of 5
A typical primitive arthropod had many
identical ____________________, each
with a pair of appendages.
1
2
3
4
5
0 of 5
Arthropods must undergo periods of
____________________ because their
skeletons cannot grow.
1
2
3
4
5
0 of 5
Arthropods are classified on the basis of the
number and structure of their body
segments and ____________________.
1
2
3
4
5
0 of 5
Figure 28–2
On the chelicerate in Figure 28–2, the
appendage labeled 1 is a(an)
____________________.
1
2
3
4
5
0 of 5
On the chelicerate in Figure 28–2, the
appendages labeled 2, which contain fangs,
are called ____________________.
1
2
3
4
5
0 of 5
A uniramian with wings must be
a(an) ____________________.
1
2
3
4
5
0 of 5
Insects have ____________________
pairs of legs.
1
2
3
4
5
0 of 5
An immature grasshopper resembles an adult grasshopper
but does not have wings. Therefore, grasshoppers undergo
____________________ metamorphosis.
1
2
3
4
5
0 of 5
Within a society, particular tasks or roles are
performed by groups of individuals called
____________________.
1
2
3
4
5
0 of 5
Echinoderms excrete nitrogen-containing
cellular wastes primarily in the form of
____________________.
1
2
3
4
5
0 of 5
In an echinoderm, oxygen is carried
throughout the body by the
_________________________ system.
1
2
3
4
5
0 of 5
In the water vascular system of a sea star,
the _________________________ connect
the ring canal with the tube feet.
1
2
3
4
5
0 of 5
Echinoderm X has slender, flexible arms, can move rapidly,
and feeds on detritus. This echinoderm is a(an)
_________________________.
1
2
3
4
5
0 of 5
List three features that are present
in the body plan of arthropods.
1
2
3
4
5
0 of 5
How would the body plan of a typical
primitive arthropod probably differ from that
of a living arthropod such as a crayfish?
1
2
3
4
5
0 of 5
Suppose an arthropod lacked the skin glands that normally
are responsible for digesting the inner part of the skeleton.
How would this defect affect the arthropod’s ability to grow?
1
2
3
4
5
0 of 5
Suppose you observed an arthropod whose body was
divided into a cephalothorax and an abdomen. To which of
the three major groups of arthropods could this specimen
belong?
1
2
3
4
5
0 of 5
Identify the respiratory organs used
by spiders and by horseshoe crabs.
1
2
3
4
5
0 of 5
How are mites and ticks harmful
to humans?
1
2
3
4
5
0 of 5
Name two ways in which insects
are beneficial to humans.
1
2
3
4
5
0 of 5
Figure 28–3
Figure 28–3 shows the development of a
beetle. Identify the stages labeled 1 through
4.
1
2
3
4
5
0 of 5
What type of metamorphosis is
shown in Figure 28–3?
1
2
3
4
5
0 of 5
If you found a caterpillar of a species you had
never seen before, why would it be difficult to
predict what the adult of that species looks like?
1
2
3
4
5
0 of 5
How does a worker ant communicate the
location of a food source to other ants in the
colony?
1
2
3
4
5
0 of 5
Contrast the body symmetry of
echinoderms as larvae and adults.
1
2
3
4
5
0 of 5
Why are echinoderms considered to be
more closely related to chordates than to
other invertebrates?
1
2
3
4
5
0 of 5
What will happen if a sea star is
pulled into pieces?
1
2
3
4
5
0 of 5
How is suction involved in the
feeding of a sea star?
1
2
3
4
5
0 of 5
A friend tells you that he has found a small animal with a
segmented body and jointed appendages. On the basis of
these two features, he concludes that the animal is an
arthropod. Evaluate his conclusion.
1
2
3
4
5
0 of 5
Describe the events that take
place when an arthropod molts.
1
2
3
4
5
0 of 5
Describe the external structural differences
between spiders and insects.
1
2
3
4
5
0 of 5
Compare and contrast
centipedes and millipedes.
1
2
3
4
5
0 of 5
Contrast barnacles and horseshoe crabs in
terms of their classification, structure, and
habitat.
1
2
3
4
5
0 of 5
One reason that is cited for the evolutionary success of insects is that many
young insects differ from adults in appearance and feeding methods. However,
this reason generally applies only to insects undergoing one of the two types of
insect metamorphosis. What is that type of metamorphosis? Why doesn’t the
other type of metamorphosis have this advantage?
1
2
3
4
5
0 of 5
Explain how a worker honeybee
communicates the location of food that is
more than 50 meters from the hive.
1
2
3
4
5
0 of 5
Describe reproduction and
development in sea stars.
1
2
3
4
5
0 of 5
Explain how echinoderms can survive
without a specialized circulatory, respiratory,
or excretory system.
1
2
3
4
5
0 of 5
How does a sea star’s skeleton enable a
sea star to feed in a way that a sand dollar
cannot?
1
2
3
4
5
0 of 5