EXAM 3 - CH 24 & 25 Flashcards
What type of animals have a fluid-filled body cavity that is not completely lined with mesoderm?
pseudocoelomates
Hard corals secrete exoskeletons made of _______ _________.
Hard corals secrete exoskeletons made of
calcium carbonate.
The phylum Porifera includes _______.
The phylum Porifera includes sponges.
Examples of protostomes include
r________, a_________, f________,
a_______, and m_______.
(N________, A________, P___________,
A________, and M________)
Examples of protostomes include
roundworms, arthropods, flatworms,
annelids, and mollusks.
(Nematoda, Arthropoda, Platyhelminthes,
Annelida, Mollusca)
__________ (clams, scallops, oysters, mussels)
live in _____ & _____ ______, are _____ feeders,
have gills for _______ & _______,
and have a _______ ____
for burrowing or attachment to rocks.
Bivalves (clams, scallops, oysters, mussels)
live in fresh & marine waters, are filter feeders,
have gills for feeding & respiration,
and have a muscular foot
for burrowing or attachment to rocks.
Early groups of ________ had
modified ______ ____ that could be used to drag
themselves from a drying puddle to a deeper pool,
giving rise to rise to the first vertebrates
to invade land – ________ (tetrapods).
Early groups of lungfishes had
modified fleshy fins that could be used to drag
themselves from a drying puddle to a deeper pool,
giving rise to rise to the first vertebrates
to invade land – amphibians (tetrapods).
Cnidarians with the _____ body plan have a
bell-shaped body and are ____-________.
Cnidarians with the medusa body plan have a
bell-shaped body and are free-floating.
How many chambers do the bird
and mammal heart have?
4
Arthropoda are ___________ - their bodies are
covered by an outer layer that is periodically shed.
Arthropoda are ecdysozoans - their bodies are
covered by an outer layer that is periodically shed.
Cephalopods include o_________,
n_________, c_________, & s______.
Cephalopods include octopuses,
nautiluses, cuttlefish, & squids.
Arthropods have an _____ circulatory system,
breathe via ______ (crustaceans),
______ (terrestrials), or ____ ____ (arachnids),
have a ______ nervous system,
and well-developed sensory structures such as
______ & ______ receptors and ______ eyes.
Arthropods have an open circulatory system,
breathe via gills (crustaceans),
tracheae (terrestrials), or book lungs (arachnids),
have a complex nervous system,
and well-developed sensory structures such as
chemical & tactile receptors and compound eyes.
Platyhelminthes (_________) have a
nervous system composed of a simple brain,
or _______, and ladder-like _____ _____
that run the length of their bodies.
Platyhelminthes (flatworms) have a
nervous system composed of a simple brain,
or ganglia, and ladder-like nerve cords
that run the length of their bodies.
How many chambers does
the amphibian heart have?
3
Organisms with _______ symmetry can be
divided into roughly equal halves by any plane
that passes through the _______ axis.
Organisms with radial symmetry can be
divided into roughly equal halves by any plane
that passes through the center axis.
Ctenophora, or ____ _______,
live in _______ waters,
have a ___________ diet,
do not have sting cells,
and are mostly ______________.
Ctenophora, or comb jellies,
live in coastal waters,
have a carnivorous diet,
do not have sting cells,
and are mostly hermaphroditic.
What type of symmetry does a sea star have?
Bilateral symmetry as larvae;
radial symmetry as adults
Lungfishes and coelacanths are fishes
in the class _____________.
Lungfishes and coelacanths are fishes
in the class Osteichthyes.
Echinoderms exhibit _________ symmetry in the
larvae stage but _________ symmetry as adults.
Echinoderms exhibit bilateral symmetry in the
larvae stage but radial symmetry as adults.
Lancelets and sea squirts are invertebrate _____.
Lancelets & sea squirts are invertebrate chordates.
Insects, arachnids, myriapods (centi/millipedes), &
crustaceans are all in the class ________.
Insects, arachnids, myriapods (centi/millipedes),
& crustaceans are all in the class Arthropoda.
The phylum Platyhelminthes includes _________.
The phylum Platyhelminthes includes flatworms
How many chambers does the reptilian heart have?
3 (modified)
During development in ___________,
body cavity forms as an outgrowth of
the digestive cavity.
During development in deuterostomes,
body cavity forms as an outgrowth of
the digestive cavity.
Which jawless fishes produce massive amounts of slime as a defense mechanism?
Hagfishes
The phylum Ctenophora includes ____ _______.
comb jellies
Which of the following would be useless for
determining whether a horse is more related
to a pig or a human?
comparison of: vestigial structures, DNA,
analagous structures, or homologous structures
comparison of analogous structures
Examples of deuterostomes include
e_________ & c________.
echinoderms, chordates
When a polyp dies within a coral reef,
the ________ remains, and new ______
continue building the colony.
When a polyp dies within a coral reef,
the skeleton remains, and new polyps
continue building the colony.
The phylum Echinodermata includes
s__ _____, s__ _______, and s__ _________.
sea stars, sea urchins, sea cucumbers
Organisms with radial symmetry tend to be _______ or _______ on _______.
Organisms with radial symmetry tend to be
sessile or drift on currents.
Major milestones in animal evolution:
►appearance of ______
(______– no tissue, all other animals – tissue);
►appearance of ______ ______
(Cnidaria & Ctenophora – ______,
all remaining animals – bilateral);
►______ & ______development –
(e_________ & l____________ – protosomes;
e_________ & c__________ – deuterostomes)
Major milestones in animal evolution:
►appearance of tissues
(sponges– no tissue, all other animals – tissue);
►appearance of body symmetry
(Cnidaria & Ctenophora – radial,
all remaining animals – bilateral);
►protosome & deuterosome development –
(ecdysozoans & lophotrosozoans – protosomes;
echinodermates & chordates – deuterostomes)
Which embryonic germ layer covers the body,
lines inner cavities, and forms the nervous system?
ectoderm
Among myriapods, what differentiates
a millipede from a centipede?
Millipedes have 2 legs per segment,
Centipedes have 1 leg per segment.
Cnidarians have 2 body types:
_______ (tubular) & _______ (bell-shaped).
Cnidarians have 2 body types:
Polyp (tubular) & medusa (bell-shaped).
Organisms with radial symmetry have
___ embryonic _______ _______.
Organisms with radial symmetry have
2 embryonic germ layers.
The phylum Nematoda includes __________.
roundworms
__________ (Annelida / Oligochaeta),
live in moist __________ habitats.
Earthworms (Annelida / Oligochaeta),
live in moist terrestrial habitats.
Body cavities act as a _________,
providing support, as a buffer between
________ ______ & the ________ _____,
and allow _____ to move independently
of the body wall.
Body cavities act as a skeleton,
providing support, as a buffer between
internal organs & the external world,
and allow organs to move independently
of the body wall.
How many chambers does the fish heart have?
2
What are the two classes (common names)
that are included in the group of Jawless Fishes?
lampreys, hagfishes
Animals with _______ symmetry exhibit
_________, the concentration of sensory organs
& a brain in a well-defined head,
with definite _______ and _______ regions.
Animals with bilateral symmetry exhibit
cephalization, the concentration of sensory organs
& a brain in a well-defined head,
with definite anterior and posterior regions.
Two main phyla in Ecdysozoa are
_________ & ________.
Two main phyla in Ecdysozoa are
Nematoda & Arthropoda.
In Annelida, segmentation allows for
_____ ________; each segment contains
identical copies of ______, _______ _________,
(________ & ______), and __________.
In Annelida, segmentation allows for
complex movement; each segment contains
identical copies of nerves, excretory structures
(nephridia & pores), and muscles.
In general, which of the following
does NOT describe an animal?
autotroph, multicellular, ingest nutrients, eukaryotic
Autotroph
Cephalopods have tentacles with
_______ _______ and
suction disks for _______ and _______.
Cephalopods have tentacles with
chemosensory abilities and
suction disks for locomotion and predation.
The phylum Porifera includes _______
and is the only phylum of animals that
do not have _______systems.
The phylum Porifera includes sponges
and is the only phylum of animals that
do not have tissue systems.
How many chambers does the fish heart have?
2
What is the closest living relative of tetrapods?
lungfishes
Which invertebrate chordates exhibit all
chordate characteristics as larvae and adults?
Lancelets
Monotremes include the _______ and
_______ _______; the females lay _______ eggs
and _______ their hatchlings.
Monotremes include the platypus and
spiny anteater; the females lay leathery eggs
and nurse their hatchlings.
Annelida have ______ circulatory systems
and a nervous system composed of
paired _______ and paired ______ _____ _____.
Annelida have closed circulatory systems
and a nervous system composed of
paired ganglia and paired ventral nerve cords.
Mollusca are ______mates with a ________
that forms a gill chamber, secrete ______,
have _____ circulatory systems (most),
and nervous systems composed of
__________ & ______ ________.
Mollusca are coelomates with a mantle
that forms a gill chamber, secrete shells,
have open circulatory systems (most),
and nervous systems composed of
ganglia & ventral nerves.
_____ & _____ are examples of myriapods.
Centipedes, millipedes
How many chambers does the reptilian heart have?
3 (modified)
The phylum Mollusca includes
c_____, s______, o_________, and s_____.
clams, snails, octopuses, squid
What groups are included with
invertebrate chordates?
Lancelets, sea squirts.
The main anatomical features that mark
branch points on the animal evolutionary tree are
the appearance of ______,
the appearance of ____ ________,
and __________ & __________ development.
The main anatomical features that mark
branch points on the animal evolutionary tree are
the appearance of tissues,
the appearance of body symmetry,
and protostome & deuterostome development.
All chordates have a hollow _____ _____,
a _____, pharyngeal _____ _____,
and a post-anal _____.
All chordates have a hollow nerve cord,
a notochord, pharyngeal gill slits,
and a post-anal tail.
_____ (that provide flight control + insulation),
_____ _____ (that reduce skeletal weight),
a _____ _____ (females),
and _____ _____ (which free females
from carrying developing offspring)
are all adaptions for flight in birds.
Feathers (that provide flight control + insulation),
hollow bones (that reduce skeletal weight),
a single ovary (females),
and shelled eggs (which free females
from carrying developing offspring)
are all adaptions for flight in birds.
What are three types of mollusks?
gastropods, bivalves, and cephalopods
Lobe-finned fishes evolved
(before / after) ray-finned fishes.
after
The main subgroups of mammals are
________, ________, and ________ ________.
monotremes, marsupials, placental mammals
Bivalves include
_______, _______, _______, & _______.
mussels, oysters, clams, scallops
Bilateral animals can be divided into two main groups based on embryological development: __________ & __________
protostomes & deuterostomes
What is one main characteristic that
differentiates animals from plants?
plants are autotrophic
What are the two classes (common names)
that are included in the group of Jawless Fishes?
Lampreys & hagfishes
What are the 3 clades of Chordata?
lancelets,
tunicates (sea squirts),
and craniates (hagfishes + vertebrates)
Animals in which 2 phyla have
open circulatory systems?
Arthropoda, Mollusca
The three subgroups of annelids are
O__________, P_________, and L________.
Oligochaetes, Polychaetes, Leeches
What type of animals have a fluid-filled body
cavity completely lined with mesoderm?
coelomates
Which phylum of animals exhibit bilateral symmetry
as larvae, but radial symmetry as adults?
Echinodermata
Which animal has bilateral symmetry?
flatworm, jellyfish, coral, sea anemone
Flatworm
Why would it be beneficial for a parasitic
flatworm to be hermaphroditic?
To be able to reproduce if no other flatworms
are around with which to mate
Which jawless fishes have sucker like mouths
with rasping teeth on tongue used to
suck blood and body fluids?
Lampreys
Flatworms lack circulatory and respiratory systems and exchange gas via ________.
Diffusion
Which invertebrate chordates exhibit all chordate characteristics as larvae and adults?
Lancelets
The phylum Annelida includes
___________ _____.
segmented worms.
Vertebrates were able to invade most habitats
due to adaptations such as
an __________ that can grow & repair itself,
paired ________, and an increased size and
complexity of _______ and ______ ________.
Vertebrates were able to invade most habitats
due to adaptations such as
an endoskeleton that can grow & repair itself,
paired appendages, and an increased size and
complexity of brain and sensory structures.
In animals with a __________ __________,
pressurized fluid fills the coelom and provides
support for organs and a framework
for muscle contractions.
hydrostatic skeleton
TRUE/FALSE:
Crustaceans are ecdysozoan arthropods.
TRUE
The main subgroups of mammals are
_____, _____, and _____ _____.
Monotremes, Marsupials, and Placental Mammals
Roundworms are free-living or parasitic,
ec___________, ps__________, ar_________
that have a _____ brain
& exchange gas via _______.
Roundworms are free-living or parasitic,
ecdysozoan, pseudocoelomate, arthropods
that have a simple brain
& exchange gas via diffusion.
Animals with _____ symmetry typically develop
from two embryonic tissue layers.
radial
__________ are freshwater inhabitants possessing
both _____ and _____ and can survive without
water by burrowing in mud and sealing
themselves in a _____ -_____ _____.
Lungfishes are freshwater inhabitants possessing
both gills and lungs and can survive without
water by burrowing in mud and sealing
themselves in a mucus-lined chamber.
Arthropod bodies have three regions
with different functions:
_______ – feeding & sensing,
_______ – locomotion,
and _______ – digestion.
Arthropod bodies have three regions
with different functions:
Anterior – feeding & sensing,
Thorax – locomotion,
and Abdomen – digestion.
From the groups of Annelida, Arthropoda,
Echinodermata, Chordata, and Mollusca,
which ones are “segmented”?
Annelida, Arthropoda, Chordata
In an ____ __________ system, blood reaches
organs by percolating through the ________.
In an open circulatory system, blood reaches
organs by percolating through the hemocoel.
Cnidarians have _________ - coiled filaments
that are triggered when touched that may
stick to or entangle prey, and/or may inject
painful or lethal poison.
cnidocytes
The phylum Cnidaria includes
_______, sea _______, sea ___________.
and _________ (tubularians).
The phylum Cnidaria includes
corals, sea jellies, sea anemones.
and hydrozoans (tubularians).
The three prominent classes of mollusks are:
gastropods (_______ & ______),
bivalves (_____, _______, _______, _______), &
cephalopods (_________, _________,
_________, _____).
The three prominent classes of mollusks are:
gastropods (Snails & slugs),
bivalves (mussels, oysters, clams, scallops), &
cephalopods (octopuses, nautiluses,
cuttlefish, squids).
Which embryonic germ layer is located between
the ectoderm and endoderm, forms muscle, and
forms circulatory & skeletal systems when present?
mesoderm
Organisms with radial symmetry have ___ embryonic germ layers: _____________
2: endoderm & ectoderm
All organisms in the superphylum ________
periodically molt, or shed, their outer layer.
Ecdysozoa
In sponges, water flows in through _____
and exits through ______.
In sponges, water flows in through pores
and exits through oscula.
____________ have an exoskeleton
composed of _____ that provides protection,
water conservation, and muscle attachment
for precise movement.
Ecdysozoans have an exoskeleton
composed of chitin that provides protection,
water conservation, and muscle attachment
for precise movement.
_____ secrete massive quantities
of ______________________ defensively.
Hagfishes secrete massive quantities
of massive quantities of slime defensively.
__________ (octopuses, nautiluses, cuttlefish,
& squids) are _________ carnivores that move
rapidly by expelling water from _______ _______.
Cephalopods (octopuses, nautiluses, cuttlefish,
& squids) are predatory carnivores that move
rapidly by expelling water from mantle cavities.
How do arthropods grow while being contained in
an exoskeleton, which is a rigid, heavy structure?
Arthropods molt, or shed, their exoskeleton
and replace it with a bigger one.
Flatworms (C. ________________) are
acoelomates, which lack a ____ ______.
Flatworms (C. Platyhelminthes) are
acoelomates, which lack a body cavity.
_____-_____ fishes are the most diverse
and abundant group of vertebrates.
Ray-finned
Many soft-bodied _________ have
hydrostatic skeletons, such as e_________,
___ _____, and all animals in the phylum _______.
Many soft-bodied coelomates have
hydrostatic skeletons, such as earthworms,
sea stars, and all animals in the phylum Cnidaria.
Organisms with _______ symmetry have
mirror image halves only along one plane
down the _______.
Organisms with bilateral symmetry have
mirror image halves only along one plane
down the midline.
Which jawless fishes have sucker like mouths
with rasping teeth on tongue used to
suck blood and body fluids?
Lampreys
Annelids can reproduce sexually,
or asexually by _____________,
and some species are _________________.
Annelids can reproduce sexually,
or asexually by fragmentation,
and some species are hermaphroditic.
Gastropods include _____ & ______.
slugs & snails
The excretory structure in annelid worms
is ___________.
nephridium
Echinodermata are _____________ that are
exclusively ______, have no distinct _____ and
no ___________ system, and have ___________
that send projections through their skins.
Echinodermata are deuterostomes that are
exclusively marine, have no distinct brain and
no circulatory system, and have endoskeletons
that send projections through their skins.
A flatworm has no internal body cavity
separating the gut and the body wall.
The flatworm is a(n) ______.
Acoelomate
_____ are jawless fish with a _____ _____
protected by cartilagionous segments
that live in fresh and marine waters.
Lampreys are jawless fish with a spinal cord
protected by cartilagionous segments
that live in fresh and marine waters.
The following characteristics made
cephalopods successful predators:
_______ with chemosensory abilities & _______
disks, ability to move rapidly by _______ _______
_______, complex _______ capable of _______,
and highly developed _______ _______ and eyes.
The following characteristics made
cephalopods successful predators:
tentacles with chemosensory abilities & suction
disks, ability to move rapidly by expelling water
forcefully, complex brains capable of learning,
and highly developed sensory systems and eyes.
Some insects have _______ metamorphosis and
go through 4 stages: egg, _____, ____, adult;
and some have __________ metamorphosis with
only 2 stage: _______ /_______ and _______.
Some insects have complete metamorphosis and
go through 4 stages: egg, larva, pupa, adult;
and some have incomplete metamorphosis with
only 2 stage: egg /nymph and adult.
Polychaetes (annelids) live mostly in
________ habitats inside _____, project feathery
______, and some have segmental, paired
fleshy ________ for locomotion.
Polychaetes (annelids) live mostly in
marine habitats inside tubes, project feathery
gills, and some have segmental, paired
fleshy paddles for locomotion.
Monotremes include the _________ and
_____ ____________; the females lay
______ _____and nurse their hatchlings.
Monotremes include the platypus and
spiny anteater; the females lay
leathery eggs and nurse their hatchlings.
Annelida (segmented worms) have a fluid-filled
______ which functions as a _________
________ in which pressurized fluid functions
as the framework for muscle contraction.
Annelida (segmented worms) have a fluid-filled
coelom which functions as a hydrostatic
skeleton in which pressurized fluid functions
as the framework for muscle contraction.
Which embryonic germ layer is the inner layer
and lines most hollow organs?
endoderm
List examples of Echinodermata:
Sea stars, sea urchins, sea cucumbers,
sand dollars, sea lilies
Myriapods have one pair of _____,
_____ eyes, and breathe via _____.
Myriapods have one pair of Antennae,
simple eyes, and breathe via tracheae.
Hagfishes are in the class _______.
Myxini
_____, _____, and _____ are
of the class Chondrichthyes.
Sharks, rays, and skates
The phylum Chordata includes
________, ___ _______, and ___________.
lancelets, sea squirts, vertebrates
Which chordate group is most closely
related to vertebrates?
Myxini (hagfishes)
What do flatworms (Platyhelminthes) have
in common with sea jellies, corals,
sea anemones, and hydrozoans (Cnidarians)?
they have a digestive system with a single opening
TRUE/FALSE:
Myriapods are ecdysozoan arthropods.
TRUE
_______ are the most abundant and
diverse organisms on Earth.
Arthropods
Parasitic _____ attach to host with
a sucker-like mouth.
lampreys
Cephalopods have _______ circulatory systems,
complex _______ that are capable of _______,
highly developed _______ systems,
and _______ similar to vertebrates.
Cephalopods have closed circulatory systems,
complex brains that are capable of learning,
highly developed sensory systems,
and eyes similar to vertebrates.
Sponges are ______ as larvae,
but _______ as adults.
Sponges are motile as larvae,
but larvae as adults.
Lungs, less permeable skin, internal fertilization,
and a shelled amniotic egg are adaptations of
_________ for _____ __ _____.
reptiles, life on land
Lobe-finned fishes have fleshy fins containing
_____ -_____ _____ surrounded by _____ .
rod-shaped bones, muscle
_____ and _____ are fishes
in the class Osteichthyes.
Lungfishes, coelacanths
Are Platyhelminthes parasitic or non-parasitic?
Both
List 5 examples of crustaceans:
Crabs, lobsters, shrimp, crayfish, barnacles
During development in __________,
the body cavity forms within a space between
the body wall & the digestive cavity.
protostomes
Crustaceans (superphylum: ________,
phylum: _________) are aquatic animals with
gills, 2 pairs of ________, and ________ eyes.
ex: c____, c_______, l_______,
s_____, & b________.
Crustaceans (superphylum: Ecdysozoa,
phylum: Arthropoda) are aquatic animals with
gills, 2 pairs of antennae, and compound eyes.
ex: crabs, crayfish, lobsters,
shrimp, & barnacles.
Cnidarians with the _____ body plan have
a tubular body and are _______.
Cnidarians with the polyp body plan have
a tubular body and are sessile.
Hard corals have the _____ body shape.
Polyp
The internal skeleton of sponges is made of
_______, which are composed of
_______ carbonate, _______, or _______.
The internal skeleton of sponges is made of
spicules, which are composed of
calcium carbonate, silica, or protein.
Insects that undergo _______ metamorphosis
have an egg, _____, _____, and adult stage.
Insects that undergo complete metamorphosis
have an egg, larva, pupa, and adult stage.
__________ have a tubular gut with two openings;
the pharynx ______ __ ____, the _________
conducts food, the ____ stores food,
the _________ grinds food,
and the ________ absorb nutrients.
Annelids have a tubular gut with two openings;
the pharynx draws in food, the esophagus
conducts food, the crop stores food,
the gizzards grinds food,
and the intestines absorb nutrients.
TRUE/FALSE:
Insects are ecdysozoan arthropods.
TRUE
__________ animals lack a body cavity.
Acoelomates
______________ are bilateral protostomes
which have a special feeding structure called
a lophophore, or pass thru a __________
larva developmental stage.
Lophotrochozoans are bilateral protostomes
which have a special feeding structure called
a lophophore, or pass thru a trochophore
larva developmental stage.
Sharks, rays, and skates are
of the class _________.
Chondrichthyes
Most insects have 1 pair of _______,
___ pairs of legs, and 2 pairs of _______.
Most insects have 1 pair of antennae,
3 pairs of legs, and 2 pairs of wings.
The phylum Arthropoda includes
i______, a________, and c___________.
insects, arachnids, crustaceans
_______________ (snails & slugs),
have a _______ ____ for locomotion,
may possess a shell,
feed via ____ (ribbon of tissue w/ many teeth),
have ____ in a cavity beneath the shell,
can diffuse gas _______ _______,
and have a _______ _______if terrestrial.
Gastropods (snails & slugs),
have a muscular foot for locomotion,
may possess a shell,
feed via radula (ribbon of tissue w/ many teeth),
have gills in a cavity beneath the shell,
can diffuse gas via skin,
and have a simple lung terrestrial.
Echinodermata live exclusively in _____ habitats,
are ___oelomates,
have a unique _____-vascular system,
have a _____ nervous system,
_____ a circulatory system,
and can re__________.
Echinodermata live exclusively in marine habitats,
are coelomates,
have a unique water-vascular system,
have a simple nervous system,
lack a circulatory system,
and can regenerate.
Which jawless fishes produce massive amounts
of slime as a defense mechanism?
Hagfishes
Mammals are warm-blooded _______
with high _______ rates, 4-chambered hearts,
____ for insulation, highly developed ______,
and ________ ______ in females,
who provide ________ _______ ____ after birth.
Mammals are warm-blooded craniates
with high metabolic rates, 4-chambered hearts,
hair for insulation, highly developed brains,
and mammary glands in females,
who provide extended parental care after birth.
Organisms with bilateral symmetry have ___ embryonic germ layers: _____________
3: endoderm, ectoderm, and mesoderm
How are sponges different from other animals?
Sponges do not have tissue-level organization
Hagfishes are _____, eel-shaped fish, with
_____ skin, and a partial _____ but no _____.
Hagfishes are jawless, eel-shaped fish, with unscaled skin, and a partial skull but no vertebra.
Marsupials include _____, _____, and _____;
their embryos begin __ _____, are born at
an _____ _____, then crawl to and grasp
a nipple to complete development
(inside a pouch, in most species).
Marsupials incl. opossums, koalas, & kangaroos;
their embryos begin en utero, are born at
an immature stage, then crawl to and grasp
a nipple to complete development
(inside a pouch, in most species).
All animals are ___karyotic, _____cellular,
____ cell walls, are ______trophic,
reproduce ________ (most), are ______,
and are able to _______ _______ __ _______.
All animals are eukaryotic, multicellular,
lack cell walls, are hetero,
reproduce sexually (most), are motile,
and are able to respond rapidly to stimuli.
What is one main characteristic that
differentiates animals from both plants and fungi?
fungi & plants have cell walls, animals do not
