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Biology & Life Science
Q:
What evidence is there that choanoflagellates were the ancestors to animals?
Q:
___________, such as sea stars, are invertebrate members of the deuterostome lineage.
Q:
The __________ (nematodes) have an unsegmented body, a cuticle that is molted, a complete gut, and a false coelom.
Q:
___________, or water bears, have a reduced coelom and molt.
Q:
__________ in annelids regulate the composition of body fluid.
Q:
__________, such as jellyfishes, corals, and sea anemones, are radially symmetrical.
Q:
__________ are asymmetrical and do not have tissues or organs.
Q:
Animals most likely evolved from a colony similar to __________, a type of protist.
Q:
In __________, an anus forms first.
Q:
The gut cavity may be a fully lined coelom or a partially lined __________.
Q:
__________ is a concentration of nerves and sensory structures at the head end.
Q:
Some animals have no body symmetry or have __________ symmetry like a wheel.
Q:
__________ are multicelled heterotrophs without cell walls.
Q:
Respond to the following statements in reference to the five animal phyla listed below.
a. Annelida
b. Arthropoda
c. Mollusca
d. Echinodermata
e. Rotifera
"Wheel animals" are in this phylum.
Q:
Respond to the following statements in reference to the five animal phyla listed below.
a. Annelida
b. Arthropoda
c. Mollusca
d. Echinodermata
e. Rotifera
This phylum has the greatest number of species.
Q:
Respond to the following statements in reference to the five animal phyla listed below.
a. Annelida
b. Arthropoda
c. Mollusca
d. Echinodermata
e. Rotifera
Although most members are enclosed by hardened shells, this phylum name literally means "soft body."
Q:
Respond to the following statements in reference to the five animal phyla listed below.
a. Annelida
b. Arthropoda
c. Mollusca
d. Echinodermata
e. Rotifera
The larval stage in this phylum has bilateral symmetry, whereas the adult stage exhibits radial symmetry.
Q:
Respond to the following statements in reference to the five animal phyla listed below.
a. Annelida
b. Arthropoda
c. Mollusca
d. Echinodermata
e. Rotifera
Trilobites were members of this phylum.
Q:
Respond to the following statements in reference to the five animal phyla listed below.
a. Porifera
b. Cnidaria
c. Platyhelminthes
d. Nematoda
e. Annelida
Tapeworms are members of this phylum.
Q:
Respond to the following statements in reference to the five animal phyla listed below.
a. Porifera
b. Cnidaria
c. Platyhelminthes
d. Nematoda
e. Annelida
This phylum contains the most primitive species of the animal kingdom in the list.
Q:
Respond to the following statements in reference to the five animal phyla listed below.
a. Porifera
b. Cnidaria
c. Platyhelminthes
d. Nematoda
e. Annelida
Members of this phylum have a brain with a ventral nerve cord, a complete gut, and a circulatory system that is usually closed.
Q:
Respond to the following statements in reference to the five animal phyla listed below.
a. Porifera
b. Cnidaria
c. Platyhelminthes
d. Nematoda
e. Annelida
Members of this group have a brain with nerve cords, have a saclike or branched gut, and lack a circulatory system.
Q:
Respond to the following statements in reference to the five animal phyla listed below.
a. Porifera
b. Cnidaria
c. Platyhelminthes
d. Nematoda
e. Annelida
Members of this phylum have a pseudocoelomic cavity.
Q:
Sponges
Choose the most appropriate answer for each.
a. two pairs of legs per segment
b. tiny, flattened, crawling forms
c. planarians, flukes, tapeworms
d. nematodes
e. snails, squids, clams
f. wheel animals
g. flagellated collar cells present
h. jellyfish and corals
i. crustaceans, ticks, and insects
j. polychaetes, earthworms, leeches
k. sea urchins, sea stars
Q:
Roundworms
Choose the most appropriate answer for each.
a. two pairs of legs per segment
b. tiny, flattened, crawling forms
c. planarians, flukes, tapeworms
d. nematodes
e. snails, squids, clams
f. wheel animals
g. flagellated collar cells present
h. jellyfish and corals
i. crustaceans, ticks, and insects
j. polychaetes, earthworms, leeches
k. sea urchins, sea stars
Q:
Mollusks
Choose the most appropriate answer for each.
a. two pairs of legs per segment
b. tiny, flattened, crawling forms
c. planarians, flukes, tapeworms
d. nematodes
e. snails, squids, clams
f. wheel animals
g. flagellated collar cells present
h. jellyfish and corals
i. crustaceans, ticks, and insects
j. polychaetes, earthworms, leeches
k. sea urchins, sea stars
Q:
Rotifers
Choose the most appropriate answer for each.
a. two pairs of legs per segment
b. tiny, flattened, crawling forms
c. planarians, flukes, tapeworms
d. nematodes
e. snails, squids, clams
f. wheel animals
g. flagellated collar cells present
h. jellyfish and corals
i. crustaceans, ticks, and insects
j. polychaetes, earthworms, leeches
k. sea urchins, sea stars
Q:
Flatworms
Choose the most appropriate answer for each.
a. two pairs of legs per segment
b. tiny, flattened, crawling forms
c. planarians, flukes, tapeworms
d. nematodes
e. snails, squids, clams
f. wheel animals
g. flagellated collar cells present
h. jellyfish and corals
i. crustaceans, ticks, and insects
j. polychaetes, earthworms, leeches
k. sea urchins, sea stars
Q:
Echinoderms
Choose the most appropriate answer for each.
a. two pairs of legs per segment
b. tiny, flattened, crawling forms
c. planarians, flukes, tapeworms
d. nematodes
e. snails, squids, clams
f. wheel animals
g. flagellated collar cells present
h. jellyfish and corals
i. crustaceans, ticks, and insects
j. polychaetes, earthworms, leeches
k. sea urchins, sea stars
Q:
Cnidarians
Choose the most appropriate answer for each.
a. two pairs of legs per segment
b. tiny, flattened, crawling forms
c. planarians, flukes, tapeworms
d. nematodes
e. snails, squids, clams
f. wheel animals
g. flagellated collar cells present
h. jellyfish and corals
i. crustaceans, ticks, and insects
j. polychaetes, earthworms, leeches
k. sea urchins, sea stars
Q:
Placozoan
Choose the most appropriate answer for each.
a. two pairs of legs per segment
b. tiny, flattened, crawling forms
c. planarians, flukes, tapeworms
d. nematodes
e. snails, squids, clams
f. wheel animals
g. flagellated collar cells present
h. jellyfish and corals
i. crustaceans, ticks, and insects
j. polychaetes, earthworms, leeches
k. sea urchins, sea stars
Q:
Arthropods
Choose the most appropriate answer for each.
a. two pairs of legs per segment
b. tiny, flattened, crawling forms
c. planarians, flukes, tapeworms
d. nematodes
e. snails, squids, clams
f. wheel animals
g. flagellated collar cells present
h. jellyfish and corals
i. crustaceans, ticks, and insects
j. polychaetes, earthworms, leeches
k. sea urchins, sea stars
Q:
Annelids
Choose the most appropriate answer for each.
a. two pairs of legs per segment
b. tiny, flattened, crawling forms
c. planarians, flukes, tapeworms
d. nematodes
e. snails, squids, clams
f. wheel animals
g. flagellated collar cells present
h. jellyfish and corals
i. crustaceans, ticks, and insects
j. polychaetes, earthworms, leeches
k. sea urchins, sea stars
Q:
Millipede
Choose the most appropriate answer for each.
a. two pairs of legs per segment
b. tiny, flattened, crawling forms
c. planarians, flukes, tapeworms
d. nematodes
e. snails, squids, clams
f. wheel animals
g. flagellated collar cells present
h. jellyfish and corals
i. crustaceans, ticks, and insects
j. polychaetes, earthworms, leeches
k. sea urchins, sea stars
Q:
Which of the following groups contains organisms that produce free-living larvae?
a. cnidarians
b. echinoderms
c. arthropods
d. cnidarians and echinoderms
e. cnidarians, echinoderms, and arthropods
Q:
A water-vascular system is characteristic of the phylum
a. Arthropoda.
b. Annelida.
c. Chordata.
d. Mollusca.
e. Echinodermata.
Q:
The most successful (largest numbers of species) forms of life that have ever evolved are the
a. vertebrates.
b. insects.
c. humans.
d. protozoans.
e. mollusks.
Q:
The majority of crustaceans live in
a. bodies of freshwater.
b. tropical rain forests.
c. marine habitats.
d. wetlands.
e. grasslands.
Q:
Which of the following groups can be distinguished from other arthropods by its two pairs of antennae?
a. insects
b. millipedes
c. chelicerates
d. crustaceans
e. trilobites
Q:
A wormlike arthropod with a flattened body and carnivorous eating habits would be identified as a
a. crustacean.
b. millipede.
c. spider.
d. trilobite.
e. centipede.
Q:
An unidentified arthropod with no antennae and eight legs could be closely related to
a. grasshoppers.
b. ticks.
c. crayfish.
d. millipedes.
e. crabs.
Q:
Which of the following is NOT a chelicerate?
a. tick
b. mosquito
c. spider
d. horseshoe crab
e. scorpion
Q:
Molting in arthropods may involve a change in all but
a. body form and maturity.
b. sex.
c. body size.
d. eating habits.
e. sensory structures.
Q:
Exoskeletons are most characteristic of
a. Mollusca
b. Arthropoda
c. Nematoda
d. Chordata
e. Annelida
Q:
Which of the following is NOT a major feature of arthropods?
a. jointed appendages
b. exoskeleton
c. paired segmental nephridia
d. specialized and fused-together segments
e. specialized sensory structures
Q:
For roundworms living in the intestine of a vertebrate, the cuticle most probably serves in what capacity?
a. water retention
b. nutrient absorption
c. protection from digestive enzymes
d. excretion of metabolic wastes
e. sensory detection
Q:
Which of the following have a flexible cuticle, longitudinal muscles, a complete digestive system, and a false coelom?
a. nematodes
b. cnidarians
c. flatworms
d. echinoderms
e. sponges
Q:
During extended periods of dehydration, tardigrades
a. enter suspended animation.
b. migrate to the soil subsurface.
c. enter small ponds and lakes.
d. climb inside a plant leaf and encyst.
e. none of these
Q:
"Tardigrada" means
a. tough exoskeleton.
b. many proglottids.
c. slow walker.
d. short digestive system.
e. coelom.
Q:
Rotifers take their name from
a. their tumbling movements through the water.
b. actions of cilia on their head.
c. their radial symmetry.
d. their elaborate digestive system.
e. rotational action around the central body axis.
Q:
A radula is an organ found in
a. gastropods.
b. chitons.
c. bivalves.
d. gastropods and chitons.
e. gastropods, chitons, and bivalves.
Q:
The figure above represents
a. a cephalopod beak.
b. a aquatic snail's "tongue."
c. a bivalve penis.
d. a squid claw.
e. none of these.
Q:
Nephridia are
a. circulatory organs.
b. respiratory organs.
c. excretory organs.
d. endocrine organs.
e. part of the nervous system.
Q:
Which of the following is an organism that possesses chaetae and nephridia and exhibits coordinated movements of circular and longitudinal muscle?
a. millipede
b. tapeworm
c. polychaete
d. hookworm
e. flatworm
Q:
Animals that are hermaphroditic usually
a. fertilize their own eggs.
b. cross-fertilize.
c. donate eggs to other individuals.
d. cannot reproduce sexually.
e. fit all of these descriptions.
Q:
The organs of excretion in flatworms are
a. nephridia.
b. contractile vacuoles.
c. Malpighian tubules.
d. flame cells.
e. book lungs.
Q:
The first phylum with three germ layers is
a. Cnidaria.
b. Platyhelminthes.
c. Annelida.
d. Arthropoda.
e. Nematoda.
Q:
Use the figure above to answer the following questions.
An asexually reproducing individual is indicated by
a. A.
b. B.
c. C.
d. D.
e. E.
Q:
Use the figure above to answer the following questions.
A feeding individual in the mature colony is indicated by
a. A.
b. B.
c. C.
d. D.
e. E.
Q:
Nematocysts are used for
a. reproduction.
b. excretion.
c. muscle action.
d. circulation.
e. defense.
Q:
Use the figure above to answer the following questions. It shows a longitudinal section of a sponge body wall. The sponge interior is on the left.
A cell type that helps to pull water through the sponge and strains out food particles is indicated by
a. A.
b. B.
c. C.
d. D.
e. E.
Q:
Use the figure above to answer the following questions. It shows a longitudinal section of a sponge body wall. The sponge interior is on the left.
A cell type that secretes skeletal support elements and digests and transports food is indicated by
a. A.
b. B.
c. C.
d. D.
e. E.
Q:
Cells of the outer surface of a sponge obtain nutrients by
a. absorbing food that diffuses from the central cavity.
b. capturing food in their microvilli.
c. absorbing food distributed by amoeboid cells.
d. phagocytosing bacteria and other small food items.
e. poisoning small fish that contact them.
Q:
Poriferans are
a. herbivores.
b. filter feeders.
c. scavengers.
d. predators.
e. carnivores.
Q:
Which of the following are most closely related to the choanoflagellates?
a. animals
b. fungi
c. amoebozoans
d. algae
e. none of these
Q:
All animals are
a. multicellular, heterotrophic, and diploid.
b. multicellular, heterotrophic, and haploid.
c. multicellular, autotrophic, and diploid.
d. multicellular, autotrophic, and haploid.
e. unicellular, autotrophic, and haploid.
Q:
Use the figure above to answer the following questions.
A body plan with a pseudocoelom is indicated by
a. A.
b. B.
c. C.
d. A and B.
e. B and C.
Q:
Which of the following is true of deuterostomes?
a. The first opening into the embryo becomes the anus.
b. The first opening into the embryo becomes the mouth.
c. The second opening into the embryo becomes the anus.
d. The second opening into the embryo becomes the mouth.
e. The first opening into the embryo becomes the anus and the second opening into the embryo becomes the mouth.
Q:
An animal with bilateral symmetry
a. has left and right sides.
b. usually displays cephalization.
c. produces mirror images regardless of the number of "cuts" through the central axis.
d. has left and right sides and usually displays cephalization.
e. has left and right sides, usually displays cephalization, and produces mirror images regardless of the number of "cuts" through the central axis.
Q:
Which is false regarding the GGC gene?
a. It is present in humans, mollusks, and insects.
b. It codes for an enzyme that regulates pattern formation in cone shells.
c. It is more than 500 million years old.
d. Today the enzyme product of the gene has different functions in different lineages.
e. None of these are false.
Q:
All but which of the following are true about cone snail venom?
a. They are potential sources of new drugs of medical interest.
b. They are made by snails inhabiting the South Pacific Ocean.
c. The venom immobilizes the cone snail's prey.
d. They are lethal to cone snail prey.
e. All of these are true.
Q:
What sort of symbiosis would a mycorrhiza represent?
Q:
Why is it very dangerous to eat wild mushrooms without proper training?
Q:
You have discovered a fungus that has septate hyphae and is partnered with a photosynthetic cell. What type of fungus is it?
Q:
What is the danger of Ug99 to global food production?
Q:
A __________ (fungus-root) is a symbiotic interaction between a fungus and a plant.
Q:
__________ fungi include common molds.
Q:
__________ are an ancient fungal group and the only fungi with flagellated spores and gametes.
Q:
The filaments typically grow as an extensive mesh called a __________.
Q:
In multicelled species, spores germinate and give rise to filaments called __________.