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Ch. 15 Diversity of Animals

Across
an animal that develops from two embryonic germ layers
includes lemurs, tarsiers, monkeys, apes, and humans
the layer of cells that lines the outer surface of an animal
having no plane of symmetry
a lined body cavity derived from mesodermal embryonic tissue
an animal with a coelom that is not completely lined with tissues derived from the mesoderm as in eucoelomate animals
without a body cavity
an egg-laying mammal
a group of primates that includes bush babies of Africa, lemurs of Madagascar, and lorises, pottos, and tarsiers of southeast Asia
____ symmetry- a type of symmetry in which there is only one plane of symmetry that creates two mirror-image sides
____ bone- an air-filled bone
_____ mammal- a mammal with a complex placenta, which connects a fetus to the mother; sometimes called placental mammals
Down
a form of asexual reproduction that occurs through the growth of a new organism as a branch on an adult organism that breaks off and becomes independent; found in plants, sponges, cnidarians, and some other invertebrates
_____ gland- in female mammals, a gland that produces milk for newborns
describing animals with a body cavity completely lined with mesodermal tissue
describing an animal in which the blastopore develops into the anus, with the second opening developing into the mouth
____ symmetry- a type of symmetry with multiple planes of symmetry all cross at an axis through the center of the organism
describing an animal in which the mouth develops first during embryogenesis and a second opening developing into the anus
an animal that develops from three germ layers
____ layer- a collection of cells formed during embryogenesis that will give rise to future body tissues; such as the endoderm, ectoderm, and mesoderm
a form of asexual reproduction in which a portion of the body of an organism breaks off and develops into a living independent organism; found in plants, sponges, and some other invertebrates
a clade of animals that possesses an amniotic egg; includes reptiles (including birds) and mammals
____ respiration- gas exchange through the skin
____ gland- in mammals, a skin gland that produce a lipid mixture called sebum
_____ teeth- different types of teeth modified by different purposes
a legless amphibian that belongs to clade Apoda
oneofthegroupsofmammalsthatincludesthekangaroo,koala,bandicoot,Tasmaniandevil,andseveralother species; young develop within a pouch
____ gland- a gland in mammals that produces sweat and scent molecules