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Biology: Chapter 15 Sections

Across
one of the groups of endothermic vertebrates that possess hair and mammary glands
describing an animal in which the mouth develops first during embryogenesis and a second opening developing into the anus
a lined body cavity derived from mesodermal embryonic tissue
in female mammals, a gland that produces milk for newborns
an animal with a coelom that is not completely lined with tissues derived from the mesoderm as in eucoelomate animals
feather specialized for insulation
gas exchange through the skin
having no plane of symmetry
the sense organ that runs the length of a fish’s body, used to detect vibration in the water
one of the groups of mammals that includes the kangaroo, koala, bandicoot, Tasmanian devil, and several other species; young develop within a pouch
two overlapping fields of vision from the eyes that produces depth perception
a clade of animals that possesses an amniotic egg; includes reptiles (including birds) and mammals
a collection of cells formed during embryogenesis that will give rise to future body tissues
Down
a flexible, rod-shaped structure that is found in the embryonic stage of all chordates and in the adult stage of some chordates
includes lemurs, tarsiers, monkeys, apes, and humans
without a body cavity
frogs, salamanders, and caecilians
describing an animal in which the blastopore develops into the anus, with the second opening developing into the mouth
a chordate clade whose members possess a notochord, dorsal hollow nerve cord, pharyngeal slits, and a post-anal tail in the adult stage
a phylum of animals distinguished by their possession of a notochord, a dorsal hollow nerve cord, pharyngeal slits, and a post-anal tail at some point during their development
a gland in mammals that produces sweat and scent molecules
a series of separate bones that surround the spinal cord in vertebrates
describing animals with a body cavity completely lined with mesodermal tissue
a muscular, posterior elongation of the body extending beyond the anus in chordates
an egg-laying mammal
the layer of cells that lines the outer surface of an animal
the larval stage of a frog