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Biology: Chapter 15 Sections

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