Introduction to Animal Diversity Flashcards
A process which an organism undergoes transformation from young (nymph) to adult.
Metamorphosis
The larval stage is different from the adult stage
Complete metamorphosis
Young and adult stages resemble each other
Incomplete metamorphosis
A process in which cells in cell division are formed into different types of cells.
Processs where less specialized cells undergo changes to develop specialized structures and functions.
Differentiation
They determine the features of an organism. And links animals into one group.
Hox genes
involves the division of the animal through a sagittal plane, resulting in two mirror-image, right and left halves
Bilateral Symmetry
a symmetry in which the sides exhibit correspondence or regularity of parts around a central axis. It is lacking left and right sides.
Radial Symmetry
What are the germ layers of animals?
Ectoderm, Mesoderm, Endoderm
The main body cavity in many animals and is positioned to surround and contain the digestive tract and other organs.
Coelom
The clade of animals once thought to be characterized by the formation of the organism’s mouth before its anus during embryonic development.
Protostome
typically characterized by their anus forming before the mouth during embryonic development.
Deuterostomes
The outermost germ layer in animals
Ectoderm
The middle germ layer
Mesoderm
The innermost germ layer
Endoderm
an animal that has no internal, fluid-filled body cavity separating its body wall from its digestive tract.
Acoelomate
