Study sets, textbooks, questions
Upgrade to remove ads
Terms in this set (96)
The presence of a lophophore in a newly discovered species would suggest that the species
is a suspension feeder
Which one of the following is a lophotrochozoan?
Nematodes and arthropods both _____.
grow by shedding their exoskeleton
You find what you believe is a new species of animal. Which of the following characteristics
would enable you to argue that it is more closely related to a flatworm than it is to a
It has no coelom
A(n) _____ has a crown of ciliated tentacles that function in feeding
Which one of these mollusk groups can be classified as suspension feeders?
Which mollusk group can be described as having several calcium carbonate plates along their
What would be the best anatomical feature to look for to distinguish a gastropod from a chiton?
number of shell plates
What is the only group of Mollusca that does NOT have a radula?
In your laboratory, you examine a vial of freshwater from a local pond. You notice several
unfamiliar small (less than one millimeter in length) animals and decide to study them. You
observe that the animals have a coelom, eat microscopic food particles, reproduce by
parthenogenesis, and have offspring that do not undergo any larval stages. What else would you
expect to observe about this organism?
You find a wormlike animal while scuba diving and want to determine whether it is a
nudibranch, a polychaete, or a flatworm. Finding which of the following traits would best help
you classify the mystery animal?
bristle -like structures on tiny appendages
Which of the following organisms would you expect to have the largest
surface-area-to-volume ratio? Assume that all of the following are the same total length.
A cephalopod's tentacles are modified from its _____.
If a lung were to be found in a mollusc, where would it be located?
Which mollusc clade includes members that undergo embryonic torsion?
A terrestrial mollusc without a shell belongs to which clade?
The antennae of insects have a function most similar to that of _____.
A land snail, a clam, and an octopus all have _____.
In adult arthropods, the hemocoel _____.
provides space for the internal organs to grow and function
Which adaptation is unique to insects among all protostomes?
the ability to move by flying
) You find a multi-legged animal in your garden and want to determine if it is a centipede or a
millipede. You take the animal to a university where a myriapodologist quickly tells you that
you have found a centipede. Which of the following may have allowed her to make this
Whiteflies are common pest insects found on cotton, tomato, poinsettia, and many other plants.
Nymphs are translucent and mostly sessile, feeding on their host plants' phloem (sap) from the
undersides of leaves. They undergo incomplete metamorphosis into winged adults. Because
whitefly nymphs cannot escape predation by moving, you hypothesize that their translucent
bodies make them hard to spot by predators. How could you directly test this hypothesis?
Compare rates of predation on whitefly nymphs coated with a nontoxic dye vs. undyed
All arthropods _____.
have jointed appendages
have segmented bodies
have an exoskeleton or cuticle
What would be the most direct effect of removing or damaging an insect's antennae? The insect
would have trouble _____.
On which body segment are arthropod wings attached?
Which of the following are characteristics of arthropods?
. protostome development
three embryonic germ layers
Among the invertebrate phyla, phylum Arthropoda is unique in possessing members that have
A shared derived characteristic for members of the arthropod subgroup that includes spiders
would be the presence of _____.
You find a small animal with eight legs crawling up your bedroom wall. Closer examination will
probably reveal that this animal also has _____.
simple, but not compound, eyes
A terrestrial animal species is discovered with the following larval characteristics: exoskeleton,
system of tubes for gas exchange, and modified segmentation. A knowledgeable zoologist
should predict that the adults of this species would also feature _____.
an open circulatory system
The possession of two pairs of antennae is a characteristic of _____.
In a tide pool, a student encounters an organism with a hard outer covering that contains much
calcium carbonate, an open circulatory system, and gills. The organism could potentially be a
crab, a shrimp, a barnacle, or a bivalve. The presence of which of the following structures would
allow for the most certain identification of the organism?
When considering the wormlike phyla within the protostomes, which feature is most useful in
feeding structures or mouthparts
The heartworms that can accumulate within the hearts of dogs and other mammals have a
pseudocoelom, an alimentary canal, and an outer covering that is occasionally shed. To which
phylum does the heartworm belong?
A student observes a wormlike organism crawling about on dead organic matter. Later, the
organism sheds its outer covering. One possibility is that the organism is a larval insect (like a
maggot). However, it might be a member of the phylum ________, and one way to distinguish
between the two possibilities is by looking for the presence or absence of ________.
Nematoda; a circulatory system
Nematode worms and annelid worms share which of the following features?
a digestive tract with two openings (a mouth and an anus)
Upon close inspection of movement in annelids and nematodes, you would notice an obvious
difference. Nematodes tend to wriggle back and forth, while annelids tend to contract along
their length as their girth swells and then thin out as they stretch. What anatomical feature
explains this type of movement?
The nematodes lack circular muscle fibers
The body cavity type for arthropods and mollusk can best be described as _____.
a reduced coelom
Arthropod exoskeletons and mollusk shells both _____.
help retain moisture in terrestrial habitats
Among protostomes, which morphological trait has shown the most variation?
type of body cavity (coelom vs. pseudocoelom vs. no coelom)
What do all deuterostomes have in common?
The pore (blastopore) formed during gastrulation becomes the anus.
Which of the following classes is comprised of carnivorous predators that are able to extend
their stomachs through their mouths to feed?
often use tube feet to move around in their environment
Which of the following animal groups is entirely aquatic?
The water vascular system of echinoderms _____.
functions in locomotion and feeding
Which of the following is a characteristic of larval echinoderms?
If a kelp farmer wanted to maximize her harvest, which type of echinoderm would she be most
concerned about in the habitat?
Which of the following is a characteristic of all chordates at some point during their life cycle?
Why do adult urochordates (tunicates) lack notochords, even though larval urochordates have
them? Larvae use notochords to _____.
aid in swimming; adults are sessile and thus no longer propel themselves.
The vertebrate spinal cord develops from the embryonic _____.
dorsal hollow nerve cord
If a tunicate's pharyngeal gill slits were suddenly blocked, the animal would have trouble _____.
respiring and feeding
You believe that an adult animal you are examining is a vertebrate but concede that it may be an
invertebrate chordate. Which of the following would ensure that you are indeed looking at a
It lacks a notochord.
A team of researchers has developed a poison that has proven effective against lamprey larvae in
freshwater cultures. The poison is ingested and causes paralysis by detaching segmental muscles
from the skeletal elements. The team wants to test the poison's effectiveness in streams feeding
Lake Michigan, but one critic worries about potential effects on lancelets, which are similar to
lampreys in many ways. Why is this concern misplaced?
Lancelets live only in saltwater environments.
Vertebrates and tunicates share _____.
a notochord and a dorsal, hollow nerve cord
Which structure of the amniotic egg most closely surrounds the embryo?
Which of the following is found in many tetrapods but not in fish?
production of amniotic eggs
If the midbrain of a fish became damaged it would harm its ability to _____.
Which of the following characteristics is shared by a hagfish and a lamprey?
a well-developed notochord
Mammals and birds eat more often than reptiles. Which of the following traits shared by
mammals and birds best explains this habit?
Why do skates and rays have flattened bodies, while sharks are torpedo shaped?
Sharks are streamlined for active swimming off the bottom, while skates move about
mostly on the ocean bed.
How does a swim bladder help the ray-finned fishes maintain buoyancy?
Gas is added to the bladder as the fish's depth increases.
Suppose, while out camping in a forest, you found a chordate with a long, slender, limbless
body slithering across the ground near your tent. This critter could be _____.
What group of mammals have (a) embryos that spend more time feeding through the placenta
than the mother's nipples, (b) young that feed on milk, and (c) a prolonged period of maternal
care after leaving the placenta?
Which group's members have both lungs and gills during their adult lives?
Which of these are amniotes?
Internal fertilization, leathery amniotic egg, and skin that resists drying are characteristics of
Which feature excludes the organism from possibly being a leech?
lack of external segmentation
Terry takes the body of the snakelike organism and slices it open along its dorsal side. If it is a
hagfish, what should Terry see?
a notochord, located underneath the spinal cord
Which of the following are the most abundant and diverse of the extant vertebrates?
Unlike eutherians, both monotremes and marsupials _____.
have some embryonic development outside the uterus
Which of the following are considered apes?
In what respect do hominins differ from all other anthropoids?
Which of the following is (are) unique to animals?
nervous system signal conduction and muscular movement
Both animals and fungi are heterotrophic. What distinguishes animal heterotrophy from fungal
heterotrophy is that most animals derive their nutrition by _____.
Which of the following would you classify as something other than an animal?
The central nervous system is lacking in animals that have _____.
Which tissue type, or organ, is NOT correctly matched with its germ layer tissue?
nervous - mesoderm
In examining an unknown animal species during its embryonic development, how can you be
sure what you are looking at is a protostome and not a deuterostome?
You see a mouth, but not an anus
You find a new species of worm and want to classify it. Which of the following lines of evidence
would allow you to classify the worm as a nematode and not an annelid?
It sheds its external skeleton to grow
Which of the following is a feature of the tube -within-a-tube body plan in most animal phyla?
The mouth and anus form the ends of the inner tube.
The digestive system of most animals is lined with cells through which nutrients are absorbed.
What is the embryonic origin of these cells?
If you think of the earthworm body plan as a drinking straw within a pipe, where would you
expect to find most of the tissues that developed from endoderm?
lining the straw
What do all deuterostomes have in common?
The pore (blastopore) formed during gastrulation becomes the anus
At which developmental stage should one be able to first distinguish a diploblastic embryo from
a triploblastic embryo?
Suppose a researcher for a pest-control company developed a chemical that inhibited the
development of an embryonic mosquito's endodermal cells. Which of the following would be a
likely mechanism by which this pesticide works?
The mosquito would have trouble digesting food, due to impaired gut function
An adult animal that possesses bilateral symmetry would most likely be _____.
To reproduce, many plants produce seeds-structures containing embryonic offspring along with
nutrients inside a tough case. These offspring develop after being released by the parent plant.
To which animal reproductive strategy is seed production most comparable?
From the information provided in the figure above, how would you classify the feeding strategy
of organism C?
suspension feeding and predation
Which of the following is most likely to be aquatic?
A radula is a specialized feeding organ used to scrape material off of food for ingestion, much
like a cheese grater scrapes shreds off of a block of cheese. Snails, which have this structure, are
thus which kind of feeder?
Most fish deposit fertilized eggs, but some sharks keep the fertilized egg inside the female until
she gives birth to a relatively well-developed pup. These sharks would thus be characterized as
Following the fusion of gametes in Obelia, the resulting cell divides via mitosis to become a
have larvae which are motile and move via the motion of cilia
All sponges _____.
are sessile benthic
How many of the following are characteristics of at least some members of the phylum
a gastrovascular cavity
a polyp stage
a medusa stage
The clownfish readily swims among the tentacles of the sea anemones; the parrotfish avoids
them. One hypothesis for the clownfish's apparent immunity is that they slowly build a
tolerance to the sea anemone's toxin. A second hypothesis is that a chemical in the mucus that
coats the clownfish prevents the nematocysts from being triggered. Which of the following
graphs supports the second, but not the first, of these hypotheses?
Parrotfish lower than Clownfish
Sets with similar terms
ADVBIO - Chapter 35 Quiz
Biology Chapter 33
ADVBIO - Chapter 33 Quiz
BIO EXAM 1
Other sets by this creator
MMET 207 Exam 3
MMET 207 Lab Final
MMET 207 EXAM 2 REVIEW QUESTIONS
Other Quizlet sets
History 7, WW1, Ch 31
PHYSICS 1 FINAL
Cardiology 10: Valvular Diseases
T-1 Nav Student Guide