Integrated Principles of Zoology |
Contents
Introductionthe science of zoology | 17 |
Energy relations and the nature of protoplasm | 35 |
The cell as unit of protoplasmic organization | 51 |
Copyright | |
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Common terms and phrases
acid adapted adult amphibians animals annelids anus aquatic arthropods behavior biological birds bladder blood vessels body wall bones brain canal cavity cells characteristics chitinous chordates chromosomes ciliated cloaca coelenterates coelom color common ctenophores digestive system dorsal duct echinoderms eggs embryo endoskeleton enzymes epidermis evolution evolutionary excretory excretory system eyes factors female fibers Figure fins fish forms fossil fresh-water frog function gametes genes genetic germ layers gills glands gonads habitats hormones insects intestine invertebrates jaws kidneys larva layer live lungs male mals mammals membrane ment molecules mollusks mouth muscles mutations nematocysts nephridia nerve cord nervous system notochord oviducts oxygen pair parasitic patterns pharynx phyla phylum pigment plants posterior primitive proboscis produce protoplasm Protozoa region reproductive reptiles secreted segments sensory shell skin somites species sperm sponges stomach structure surface tentacles tion tissue tube usually ventral vertebrates worms