Thecodont In crocodilians, teeth are set in sockets. This type of dentition is called _.
Cloaca Nonavian reptiles have metanephric kidneys and empty their metabolic wastes to
the outside through their _.
Ichthyosaurs Diapsids first appeared during the Pa
Deuterostomes Triploblastic metazoans that undergo embryonic development characterized
by radial regulative cleavage and enterocoely are _.
Holothuroidea Echinoderms that have an elongated, cylindrical body with reduced ossicles and
a leathery body wall
Quasiterrestrial Amphibians can be described as _ because they are adapted for
terrestrial existence, but their life cycle is still tied to water.
Paedomorphosis The condition in which the larval characteristics of ancestors are retained in
adults is kno
The approach to taxonomy that emphasizes common descent, is based on the cladogram of
group being studied, and only recognizes monophyletic groups is cladistics.
When expressing common descent among groups, the construction of paraphyletic tax
Unicellular eukaryotes Organisms in which all life activities occur within a single plasma
membrane are called
Secondary If a eukaryotic cell obtains plastids from another eukaryote, the process is known as
Mitochondrion An engulfed aero
Sea Crustaceans dominate marine environments and are therefore referred to as insects of
67,000 Approximately _ species have been identified in Class Crustacea.
Crustacea Crabs, crayfishes, and lobsters belong to the subphylum _.
Colloblasts In ctenophores, the epidermal cells that secrete a sticky, adhesive substance used
in prey capture are known as _.
Anthozoa Largest class, which includes sea anemones, stony corals, and soft corals.
Staurozoa The polyp body is topped by a med
What are the characteristics of Amphioxus? Check all that apply. A. has significant commercial
value B. lives at the bottom of freshwater lakes C. lives half-buried in sand D. is translucent E. is
Amphioxus can be characterized by which of the
Overhunting Passenger pigeons are now extinct. One hundred and fifty years ago, their
numbers in North America are estimated to have been in the billions. What human activity was
responsible for the extinction of these birds?
Cones; rods - The retina of
Gemmules A. remain dormant for extended periods. B. are surrounded by spongin. C. are an
adaptation to harsh conditions. D. Are only found in the asconoid sponges
Select all of the following that describe members of the Class Calcarea A. Marine and fresh
Dependent Destiny-_ factors affect mammal populations based on population
A grasping tail New World monkeys have _ _ _, while Old World monkeys lack this
Sebaceous In mammals, _ glands expel a greasy mixture called sebum that keeps hai
Large flat plates While elasmobranchs have distinct teeth, members of the subclass
Holocephali have _ _ _.
Devonian The class Chondrichthyes first appeared during the _ period.
Fishes Gill-breathing aquatic vertebrates with fins are collectively known as
Tagmata - The head, thorax, and abdomen are the three _ in Hexapoda.
2 There are _ classes found in the subphylum Hexapoda.
Entognatha In the subphylum Hexapoda, the class _ is represented by collembolans,
proturans, and diplurans, which have the base of