Zoology Final Exam
Osteichthyes - Answer-Class of bony fish
Chondrichthyes - Answer-cartilaginous fishes includes the sharks, rays, and skates, paired
jaws - Answer-evolved from gill arches, grasping, chewing, increased variety
Craniata - Answer-The chordate subgroup that possess a cranium.
notochord - Answer-A longitudinal, flexible rod made of tightly packed mesodermal cells that runs along
the anterior-posterior axis of a chordate in the dorsal part of the body.
spinal column - Answer-supports the head and body and protects the spinal cord
backbone - Answer-the series of vertebrae forming the axis of the skeleton and protecting the spinal
cord
madreporite - Answer-sievelike structure through which the water vascular system of an echinoderm
opens to the outside
ring canal - Answer-in echinoderms, a circular canal that is near the mouth and that is part of the water-
vascular system
, pentaradial symmetry - Answer-circular body plan that can be divided into 5 equal parts
echinoderm - Answer-spiny skin, marine invertebrates with tube feet and calcite-covered five-part
radially symmetrical bodies
exoskeleton - Answer-external skeleton; tough external covering that protects and supports the body of
many invertebrates
biramous appendage - Answer-A biramous limb branches into two, and each branch consists of a series
of segments attached end-to-end.
mandibles - Answer-mouthparts of arthropods
endoskeleton - Answer-the internal skeleton
insect pheromone - Answer-Chemical communication among insects: signal for aggregation, trailing, sex
and alarm. Do not have an ATTACK pheromone.
spiracles - Answer-openings on the abdomen and thorax through which air enters and waste gases leave
the insect's body
cephalothorax - Answer-body part of Arachnids and Crustaceans where head and thorax are fused
together
abdomen - Answer-the hind section of an arthropods body that contains its reproductive organs and
part of its digestive tract
thorax - Answer-part of an insect's body that bears the wings and legs
Osteichthyes - Answer-Class of bony fish
Chondrichthyes - Answer-cartilaginous fishes includes the sharks, rays, and skates, paired
jaws - Answer-evolved from gill arches, grasping, chewing, increased variety
Craniata - Answer-The chordate subgroup that possess a cranium.
notochord - Answer-A longitudinal, flexible rod made of tightly packed mesodermal cells that runs along
the anterior-posterior axis of a chordate in the dorsal part of the body.
spinal column - Answer-supports the head and body and protects the spinal cord
backbone - Answer-the series of vertebrae forming the axis of the skeleton and protecting the spinal
cord
madreporite - Answer-sievelike structure through which the water vascular system of an echinoderm
opens to the outside
ring canal - Answer-in echinoderms, a circular canal that is near the mouth and that is part of the water-
vascular system
, pentaradial symmetry - Answer-circular body plan that can be divided into 5 equal parts
echinoderm - Answer-spiny skin, marine invertebrates with tube feet and calcite-covered five-part
radially symmetrical bodies
exoskeleton - Answer-external skeleton; tough external covering that protects and supports the body of
many invertebrates
biramous appendage - Answer-A biramous limb branches into two, and each branch consists of a series
of segments attached end-to-end.
mandibles - Answer-mouthparts of arthropods
endoskeleton - Answer-the internal skeleton
insect pheromone - Answer-Chemical communication among insects: signal for aggregation, trailing, sex
and alarm. Do not have an ATTACK pheromone.
spiracles - Answer-openings on the abdomen and thorax through which air enters and waste gases leave
the insect's body
cephalothorax - Answer-body part of Arachnids and Crustaceans where head and thorax are fused
together
abdomen - Answer-the hind section of an arthropods body that contains its reproductive organs and
part of its digestive tract
thorax - Answer-part of an insect's body that bears the wings and legs
