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Science chap 8
Life Science 9 Vertebrates, Invertebrates, Mammals, Reptiles, etc.
| Question | Answer |
|---|---|
| chordate | phylum of animals having gill slits, a notochord, and a nerve cord at some point in their development |
| amphibians | class of coldblooded vertebrates that have a slimy skin |
| cartilage | makes up the skeleton of jawless fishes and sharks and rays |
| cartilaginous fishes | class of fish having skeletons of cartilage |
| cold blooded animals | organisms whose body temperature changes with that of the environment |
| diaphragm | in mammals, a sheet of mascle below the lungs that separates the chest and abdomen regions to aid in breathing |
| egg-laying mammals | the mammals that lay eggs (as reptiles do) and feed young on milk |
| jawless fishes | parasitic fishes having a skeleton of cartilage and lacking jaws, scales, and paired fins |
| mammals | class of warmblooded vertebrates that have hair and feed their young on milk |
| mammary glands | special glands of mammals that produce milk for their young |
| placenta | special organ in mammals that connects the embryo to its mother |
| placental mammals | mammals whose offspring finish their embryonic development in the womb |
| pouched mammals | young complete their embryonic development in a pouch |
| primates | order of mammals that includes lemurs, monkeys, apes, and humans |
| spinal column | backbone, composed of a series of 33 separate bones (vertebrae) |
| uterus | part of the oviduct of a mammal in which the embryo develops |
| vertebrae | the 33 bones of the spinal column |
| vertebrates | animals that possess an internal skeleton and backbone |
| warmblooded animals | animals that maintain a warm body temperature regardless of the environment's temperature |
| womb | part of the oviduct of a mammal in which the embryo develops |
| bill | beak |
| tadpole | immature frog that has no tail, no limbs, and breathes through gills |
| rodents | order of mammals having large front teeth for gnawing wood and other foods |
| bony fish | class of fish having a bony skeleton, overlapping scales, and a swim bladder |
| marsupials | the pouched mammals |
| reptiles | class of coldblooded vertebrates that have a body covering of dry scales |
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