Transcript Unlike plant cells, animal cells do not have

Unlike plant cells, animal cells
do not have
1.
2.
3.
4.
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nuclei.
organelles.
cell walls.
cell membranes.
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If a cell contains a nucleus and
membrane-bound organelles, it is
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2.
3.
4.
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multicellular.
heterotrophic.
an animal cell.
eukaryotic.
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An animal is each of the
following EXCEPT
1.
2.
3.
4.
1
multicellular.
autotrophic.
heterotrophic.
eukaryotic.
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Only 5 percent of all animals
have
1. eukaryotic cells.
2. a protostome
development
pattern.
3. vertebral columns.
4. cell membranes.
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Aquatic animals that strain floating plants
and animals from the water they take in are
1.
2.
3.
4.
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parasites.
herbivores.
detritus feeders.
filter feeders.
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3
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4
Many small aquatic organisms move oxygen
and carbon dioxide through their skin by the
process of
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1. diffusion.
2. extracellular
digestion.
3. cephalization.
4. muscular
contractions.
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4
When an animal’s environment changes,
sexual reproduction improves a species’
ability to
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1. react.
2. increase its
numbers rapidly.
3. evolve.
4. produce
genetically
identical offspring.
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Muscle tissue exerts force by
becoming
1.
2.
3.
4.
1
cooler.
warmer.
longer.
shorter.
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A parasite is a type of
1.
2.
3.
4.
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algae.
vertebrate.
symbiont.
detritivore.
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The upper side of an organism
is its
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2.
3.
4.
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dorsal side.
ventral side.
anterior side.
posterior side.
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An animal that has distinct left
and right sides shows
1. radial symmetry.
2. segmentation.
3. several planes of
symmetry.
4. bilateral
symmetry.
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A blastula is a stage in the development of
an embryo that consists of
1.
2.
3.
4.
1
a solid ball of cells.
a hollow ball of cells.
a flat sheet of cells.
a folded sheet of
cells.
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Which of the three cell layers in animal embryos
gives rise to muscles and much of the circulatory,
reproductive, and excretory systems?
1.
2.
3.
4.
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endoderm
ectoderm
mesoderm
protostome
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Organisms that spend their entire adult lives
attached to one spot are said to be
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2.
3.
4.
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sessile.
heterotrophic.
flagellated.
symmetric.
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Which term is NOT associated
with sponges?
1.
2.
3.
4.
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choanocytes
medusa
spicules
gemmules
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Some biologists believe that
sponges evolved
1. from hydras.
2. independently of
all other animals.
3. from seed plants.
4. as the result of
asexual
reproduction.
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Sponges reproduce sexually by
a process called
1. cephalization.
2. internal
fertilization.
3. radial symmetry.
4. budding.
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Many sponges protect themselves
from predators by producing
1.
2.
3.
4.
1
larvae.
choanocytes.
nematocysts.
toxins.
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Which of the following best describes
the feeding habits of sponges?
1.
2.
3.
4.
1
predators
filter feeders
parasites
detritivores
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The benefit of a sponge’s producing
gemmules is that gemmules
1.
are a form of sexual
reproduction.
allow the sponge to
survive long periods of
harsh conditions.
defend the sponge
against predators.
help to filter food for the
sponge.
2.
3.
4.
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Flagella are important to the essential
functions within a sponge because flagella
1.
2.
protect the organism from predators.
digest food particles trapped within the
organism.
help move water through the organism’s
body.
produce toxins that make them poisonous
to predators.
3.
4.
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Some sponges are green
because they
1.
are more like plants
than animals.
filter algae out of the
water for food.
have photosynthetic
organisms in their
tissues.
are primary producers.
2.
3.
4.
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The cross-shaped spicules of
some sponges serve to
1. keep animals out of
their central cavities.
2. focus and direct
incoming sunlight.
3. attract symbiotic
organisms.
4. perform
photosynthesis.
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Sponges benefit some marine
animals by
1. providing a habitat.
2. eating diseased
corals.
3. poisoning their
predators.
4. supplying them with
oxygen.
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How do some sponges play an important
role in the primary productivity of coral
reefs?
1.
They provide food for sponge-eating sea
stars.
They attract light with their antennae.
They are harvested for sale as bath
sponges.
They have symbiotic relationships with
photosynthetic organisms.
2.
3.
4.
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Cnidocytes help a cnidarian
survive by
1.
2.
3.
4.
1
storing food.
forming colonies.
paralyzing prey.
providing
movement.
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Which are the simplest animals
to have body symmetry?
1.
2.
3.
4.
1
sponges
algae
cnidarians
nematocysts
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Which two functions do
nematocysts perform?
1. reproduction and
defense
2. capturing prey and
locomotion
3. defense and
capturing prey
4. locomotion and
reproduction
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A characteristic of cnidarians is
that they are
1. found only in warm,
tropical waters.
2. carnivorous animals.
3. named for their body
symmetry.
4. all of the above
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Cnidarians have two basic body
types, a medusa and a(an)
1.
2.
3.
4.
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larva.
tentacle.
polyp.
osculum.
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The body symmetry of a
cnidarian is
1.
radial in the medusa stage and bilateral in
the polyp stage.
radial in both the medusa and polyp
stages.
bilateral in both the medusa and polyp
stages.
bilateral in the medusa stage and radial in
the polyp stage.
2.
3.
4.
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In a hydra, the gastroderm and the
epidermis are separated by a jellylike
1.
2.
3.
4.
1
mesoglea.
medusa.
mesoderm.
body cavity.
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How do polyps differ from
medusas?
1.
Polyps have a mesoglea, and
medusas do not.
Medusas are cylindrical and usually
sessile, and polyps are bell-shaped
and motile.
Medusas are carnivorous, and polyps
are not.
Polyps are cylindrical and usually
sessile, and medusas are bell-shaped
and motile.
2.
3.
4.
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The nerve cells of cnidarians
make up a(an)
1. brain.
2. ocelli.
3. hydrostatic
skeleton.
4. nerve net.
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In a cnidarian, cells that sense
gravity are
1.
2.
3.
4.
1
statocysts.
ocelli.
cnidocytes.
amoebocytes.
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In jellyfishes, the medusa stage
reproduces
1.
2.
3.
4.
1
asexually.
sexually.
by budding.
by gemmules.
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A cnidarian’s inner layer of
tissue is specialized for
1.
2.
3.
4.
1
reproduction.
capturing prey.
digestion.
all of the above
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4
The class Scyphozoa contains
1.
2.
3.
4.
1
jellyfishes.
hydras.
corals.
sea anemones.
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4
Cnidarians in the class
Anthozoa are distinguished by
1. having only colonial
species.
2. having only a polyp
form.
3. reproducing only
sexually.
4. obtaining food only
from symbionts.
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What is the primary body form
of scyphozoans?
1.
2.
3.
4.
1
bud
polyp
medusa
gemmule
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The Portuguese man-of-war is a
member of what class of cnidarians?
1.
2.
3.
4.
1
Hydrozoa
Scyphozoa
Anthozoa
Porifera
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Coral reefs occur in areas
where there are
1. high levels of
sediments.
2. very deep waters.
3. high levels of
light.
4. very cool waters.
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Many corals can live only in bright
light because they depend on
1. parasites for oxygen.
2. detritivores for
carbon dioxide.
3. filter-feeders for
protection.
4. symbionts for
energy.
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25%
25%
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3
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4
Coral bleaching is a serious
ecological threat because it
1. destroys the beauty
of a coral reef.
2. causes corals to die.
3. pollutes the water.
4. causes corals to
overpopulate the
area.
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3
4
5
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3
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4
How can an extremely diverse coral reef live
in water that contains few nutrients?
1.
Corals obtain nutrients from the
runoff from land.
Reef-building corals live
symbiotically with photosynthetic
algae.
Corals recycle nutrients.
Fishes maintain the ecological
balance of coral reefs.
2.
3.
4.
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All the members of Kingdom Animalia are
heterotrophs.
_________________________
1. True
50%
50%
2. False
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5
1
2
Worms and insects are both vertebrates.
_________________________
1. True
2. False
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2
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4
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1
50%
2
Many small aquatic animals rely on diffusion to
transport oxygen, nutrients, and waste products
among their cells. _________________________
1. True
2. False
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2
3
4
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5
1
50%
2
In a protostome, the blastopore becomes
the mouth. _________________________
1. True
2. False
1
2
3
4
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5
1
50%
2
Sponges are motile, meaning they live their
entire adult lives attached to a single spot.
_________________________
1. True
50%
50%
2. False
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2
3
4
5
1
2
In a sponge, some functions are carried out
by specialized tissues.
_________________________
1. True
50%
50%
2. False
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3
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5
1
2
Cells called gemmules move water currents
through a sponge.
______________________________
1. True
50%
50%
2. False
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2
3
4
5
1
2
Sponges are important in marine ecology because
they provide habitats for some marine animals.
_________________________
1. True
2. False
1
2
3
4
50%
5
1
50%
2
Sponges have a light-focusing adaptation
that allows them to survive in a wide range
of habitats. _________________________
1. True
50%
50%
2. False
1
2
3
4
5
1
2
Choanocytes containing nematocysts are a
characteristic associated only with
cnidarians. _________________________
1. True
50%
50%
2. False
1
2
3
4
5
1
2
Cnidarians have a central mouth surrounded
by numerous tentacles.
_________________________
1. True
50%
50%
2. False
1
2
3
4
5
1
2
Polyps are a body form of cnidarians that
are motile. _________________________
1. True
2. False
1
2
3
4
50%
5
1
50%
2
A sea anemone moves its body by using a
statocystic skeleton.
_________________________
1. True
50%
50%
2. False
1
2
3
4
5
1
2
In the Portuguese man-of-war, a single
tentacle acts as a balloonlike float.
_________________________
1. True
50%
50%
2. False
1
2
3
4
5
1
2
Fertilizers and industrial pollutants can
poison coral reefs.
_________________________
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
Animals that do not have backbones
are called ____________________.
1
2
3
4
5
0 of 5
Large animals have a(an)
____________________ system to move
materials around in their bodies.
1
2
3
4
5
0 of 5
Sexual reproduction helps maintain
____________________ diversity in
populations.
1
2
3
4
5
0 of 5
The front end of an organism is the
____________________ end.
1
2
3
4
5
0 of 5
The specialized cells that move about within
the walls of a sponge are called
____________________.
1
2
3
4
5
0 of 5
Sponges that are used for bathing contain a
network of flexible protein fibers called
____________________.
1
2
3
4
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0 of 5
____________________ and archaeocytes
are cells that digest food in sponges.
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3
4
5
0 of 5
Photosynthetic symbiotic organisms provide
many sponges with food and
____________________.
1
2
3
4
5
0 of 5
Cnidarians have stinging tentacles
around their ____________________.
1
2
3
4
5
0 of 5
The life cycle of most cnidarians includes
medusas and ____________________.
1
2
3
4
5
0 of 5
The internal space of a cnidarian is called
a(an) ______________________________.
1
2
3
4
5
0 of 5
In a jellyfish, the ____________________
stage reproduces asexually.
1
2
3
4
5
0 of 5
Cnidarians have a(an) ____________________
that enables them to respond to touch by pulling
their tentacles inside their bodies.
1
2
3
4
5
0 of 5
The class of cnidarians that includes sea
anemones and corals is called
____________________.
1
2
3
4
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Symbionts provide as much as 60 percent of
the ____________________ that reefbuilding corals need.
1
2
3
4
5
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What two fundamental characteristics
distinguish animals from plants?
1
2
3
4
5
0 of 5
Why don’t small aquatic animals
need a circulatory system?
1
2
3
4
5
0 of 5
What is bilateral symmetry?
1
2
3
4
5
0 of 5
What is an advantage to having sense
organs and nerve cells concentrated at the
anterior end of the body?
1
2
3
4
5
0 of 5
Why are sponges classified as
animals?
1
2
3
4
5
0 of 5
What structures provide support
for sponges?
1
2
3
4
5
0 of 5
Describe how a sponge obtains
food and discards waste.
1
2
3
4
5
0 of 5
How might sediments from farming
affect the corals that live in coral reefs?
1
2
3
4
5
0 of 5
What body form is typical of the
scyphozoans? Describe this body form
1
2
3
4
5
0 of 5
What are the body forms included in the life
cycle of Aurelia? How do they reproduce in
each form?
1
2
3
4
5
0 of 5
Where does extracellular digestion
take place in cnidarians?
1
2
3
4
5
0 of 5
Describe the polyp body form of
cnidarians.
1
2
3
4
5
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How are coral reefs formed?
1
2
3
4
5
0 of 5
Why do hard corals require
light?
1
2
3
4
5
0 of 5
How are reef-building corals sensitive
to increasing water temperatures?
1
2
3
4
5
0 of 5
Worms, insects, birds, and dogs are all grouped together in
the Kingdom Animalia. Why do scientists place such
diverse organisms in the same group?
1
2
3
4
5
0 of 5
Describe the characteristic of bilateral symmetry in
animals. How does this body plan help an animal
carry out essential functions?
1
2
3
4
5
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Describe several advantages that an animal
receives from having a body cavity.
1
2
3
4
5
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How do sponges differ from
other animals?
1
2
3
4
5
0 of 5
In sponges, how does asexual reproduction
by budding differ from gemmule production?
1
2
3
4
5
0 of 5
From what you know about the life functions of sponges,
describe how the pollution of ocean waters with sediments
and chemicals might affect them.
1
2
3
4
5
0 of 5
Differentiate between a cnidocyte and a
nematocyst. Why are these structures
important to cnidarians?
1
2
3
4
5
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Describe the feeding behavior
of cnidarians.
1
2
3
4
5
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Identify the three classes of phylum
Cnidaria. Describe which one major
characteristic of each class.
1
2
3
4
5
0 of 5
Use examples to describe the vulnerability
of coral reefs to human activity.
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4
5
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