The reproductive structures of an earthworm are located
under the clitellum
mid-way along the length of the worm
closer to the anterior end of the worm
closer to the posterior end of the worm
The setae of the earthworm function BEST for
traction
feeling
excretion
subdividing the coelom
In order to elongate, an earthworm would have to
contract its circular muscles, while relaxing its longitudinal muscles
relax its circular muscles, while contracting its longitudinal muscles
contract both its circular and longitudinal muscles
relax both its circular and longitudinal muscles
Of the following, which is the BEST description of detritus?
Fungus
Fertilizer
Soil debris
Undigested wastes
The aortic arches of an earthworm are located around the
pharynx
intestine
esophagus
ventral nerve cord
Which of the following pairs is mismatched?
Gastropod — mantle cavity
Bivalvia — water vascular system
Oligochaete — segments
Hirudinea — suckers
Which pair most correctly matches structures with their functions?
Crop — storage; gizzard — grinding
Crop — grinding; gizzard — storage
Crop — chemical digestion; gizzard — physical digestion
Crop — physical digestion; gizzard — chemical digestion
Earthworms are MOST correctly described as
free-living
parasitic
carnivores
herbivores
The annelid feature that “relates” best to mollusks is the
degree of specialization of the nervous system
lack of development of an excretory system
development of ciliated larvae
extent to which their bodies are segmented
The correct sequence of the parts of an earthworm’s digestive system is
pharynx, crop, gizzard, intestine, anus
pharynx, gizzard, crop, intestine, anus
esophagus, gizzard, crop, intestine, anus
esophagus, crop, gizzard, stomach, intestine
The lifestyle of a polychaete is best described as
predator
prey
producer
parasite
Which of the following systems is likely the MOST developed in a leech?
Excretory
Reproductive
Digestive
Circulatory
The chemical secreted by a leech is medically significant because it prevents
bacterial infection
blood clotting
tissue rejection
skin deterioration
Which of the following sets of features most accurately defines Phylum Mollusca?
Marine, soft-bodied, mantle
Soft-bodied, mantle, closed circulatory system
Foot, mantle, soft-bodied
Marine or terrestrial, foot, open circulatory system
Which of the following is LEAST likely a function of the siphon of a clam?
Feeding
Excreting
Circulating
Reproducing
A sinus of a clam is MOST correctly described as a chamber where
air collects for respiration
blood collects to bathe tissues
muscles for movement are located
reproductive gametes are stored
Which of the following are vestigial structures?
Gills of clams
Mantles of slugs
Eyes of octopi
Radulas of snails
Which organism is mismatched with a characteristic “lifestyle”?
Clam — filter feeder
Squid — predator
Slug — carnivore
Snail — free-living
Which part of the water vascular system of a sea star is connected directly to a tube foot?
Madreporite
Lateral canal
Ring canal
Radial canal
Which system of echinoderms is LEAST specialized?
Digestive system
Locomotory
Respiratory
Which of the following is the key identifying feature of the arthropods?
Body segmentation
Metamorphosis
Exoskeletons
Jointed appendages
The circulatory system of a typical arthropod is best described as
open with a ventral pumping vessel
open with a dorsal pumping vessel
closed with a ventral pumping vessel
closed with a dorsal pumping vessel
Centipedes are members of class
Chilopoda
Diplopoda
Insecta
Uniramia
Millipedes are known for their
single pair of legs per segment and herbivorous lifestyle.
single pair of legs per segment and carnivorous lifestyle
double pair of legs per segment and herbivorous lifestyle
double pair of legs per segment and carnivorous lifestyle
The major locomotor structures of an insect are attached to its
head
thorax
cephalothorax
abdomen
Which of the following lists a grasshopper’s mouthparts in an anterior to posterior sequence?
Labium ¬ mandibles ¬ maxillae ¬ labrum
Labium ¬ maxillae ¬ mandibles ¬ labrum.
Labrum ¬ maxillae ¬ mandibles ¬ labium
Labrum ¬ mandibles ¬ maxillae ¬ labium.
To which body system do ocelli belong?
Nervous
Which of the following BEST describes the life cycle of a moth?
Egg ¬ nymph ¬ adult
Egg ¬ larva ¬ nymph ¬ adult
Egg ¬ larva ¬ pupa ¬ adult
Egg ¬ pupa ¬ adult
Of the following, the BEST description of the role of Malpighian tubules is to conduct metabolic wastes from
tissues to the intestines
tissues to the kidneys
kidneys to the excretory openings
kidneys to the spiracles
Which of the following will not enable one to distinguish gender?
Presence of an ovipositor on a grasshopper
Storage sacs on the ends of the pedipalps of a spider
The length of swimmerets on a crayfish
The thickness of the carapace of a crab
Which class of arthropods has branching appendages?
Trilobite
Arachnida
Crustacea
A grasshopper’s tracheal tubes are attached to its
lungs
spiracles
gills
book lungs
Which system does a green gland of a crayfish belong to?
How many stages are there in complete metamorphosis?
Two
Three
Four
Five
What is the function of uropods and a telson?
Excretion
Reproduction
Locomotion
Digestion
Spiders obtain oxygen through their
cuticles
tracheal tubes
The “fangs” of a spider are more technically known as
chelicerae
pedipalps
chelipeds
carapaces
Insects that transmit diseases are
pathogens
parasites
vectors
virulent
Which of the following has a nymph stage in its life cycle?
Grasshopper
Moth
Mosquito
Fly
People who enjoy eating lobster are usually eating the muscles of its
cephalothorax and chelipeds
carapace and abdomen
telson and uropods
cheliped and abdomen