CVA Test 1 review

A jawless fish

A group of living chordates that includes amphioxus, the lancet

Fleshy lobe-finned fishes

A type of symmetry with a mid-sagittal access and structures of mirror image on the two sides

Invented the binomial means of naming organisms based on genus and species

A partial diaphragm supporting short sensory tentacles

A group formed on the basis of nonhomologous characters

A group of jawless fish that appeared in the very late Cambrian and one of the first vertebrates to have a lateral line system and an inner ear with two semicircular canals

Micro fossils that were important index fossils in geological studies that represent early vertebrates

A condition whereby distantly related organisms acquire a similar appearance of features used to perform similar functions
the sorting of organisms into a hierarchy of ordered groups

A group of chordates that includes the tunicates

The head end or cranial portion of the body

A tree like branched connection between groups

A lineage of the Bilateria that includes echinoderms, hemichordates and chordates

Fossil fish whose name means plate skin from the early Silurian, and living through the Devonian.  They had heavy body armor and head shields of large fused plates of bone

A grouping of all of the organisms in a lineage plus the ancestor that they have in common

Two or more features that share a common ancestry, even if they do not appear to be similar in the descendant forms

A body or structure of a body built of repeating or duplicated sections

A vertebrate that has jaws

The single plane that divides the body into two exact mirrored images, left and right

A structure or behavior that possesses the necessary form and function before the biological role arises that eventually serves

A system of equilibrium pressure for an organism that includes a fluid filled cavity and closed within a membrane, often encased inside a muscular coat

Structures that serve as the equivalent of a kidney in amphioxus

A scientist who recognized the principles of evolution as did Darwin and at about the same time

A group that includes an ancestor and all of its descendents

A slender rod that develops from the mesoderm in all chordates and serves to stiffen the organism anteroposteriorly

The opening that allows filtered water to pass out through the original slits from the atrium of amphioxus

Study of the layer cake of the sediments laid down in a single locality, used for placing fossils and a relative sequence to each other

A series of separate bones or cartilage blocks firmly joined as a backbone that defines the major body access

A lineage of the Bilateria that includes mollusks, arthropods and other groups

The larval form of a lamprey, it hatches from an egg and is a suspension feeder
The underlying pattern Richard Owen saw of the vertebrate body as a repeating series of vertebral units

An image depicting the hypothetical genealogy of several groups of organisms

A type of symmetry where the body is laid out equally from a central access so that any of several planes passing through the center provides the animal in to equal or mirrored halves

A living agnathan groups including the hagfishes and lampreys

A type of fish tail where both the upper and lower lobes are of equal size
An early fossil vertebrate from the early Cambrian that was only slightly longer than an inch in length

The central region of a vertebra that serves to link the vertebral column anteroposteriorly

A part of the digestive tract located immediately posterior to the mouth that also contains a series of slits

One of the five main chordate characteristics, also known as the thyroid gland

Internal nares

A fluid filled internal body cavity of a chordate

A scientist who believed that acquired traits could be inherited by descendents

The group to which vertebrates belong

An animal with paired fore and hind limbs, capable of moving on land

The true ancestral descendant genetic pattern of relationships among organisms

A bony plate that covers the gill openings in some fishes

An anatomist who also coined the word "dinosaur"

A deep sea mud burrowing eel like scavenger, an agnathan

This is a plane that divides the body into anterior and posterior portions and is also referred to as  being a transverse plane

The scientist who first put forward the theory of evolution as descent with modification

Toward the tail, or pertaining to tail

The assortment of taxa represented in a typical cladogram that are of interest to the creator of the cladogram

A plane that splits an organism into left and right halves

A ray finned fish

A type of scale present in primitive lobe fin fishes that was initially rhomboid in shape

Also known as Darwin's bulldog, a scientist who supported and popularized Darwin's work

A French anatomist who explained the principle of the correlation of parts of an organism