Biology of Animals |
Contents
Evolution | 4 |
CHAPTER 1 | 17 |
THE CELL AS THE UNIT OF LIFE | 27 |
Copyright | |
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Common terms and phrases
adapted adaptive radiation adult amino acids amphibians animals annelids anus aquatic arthropods asexual behavior birds blood body wall called canal carbon cells characteristics choanocytes chromosomes ciliated cnidarians coelom colony complex coral cycle cytoplasm digestive dorsal echinoderms eggs electron embryo energy environment enzymes epidermis evolution evolutionary example feeding female fibers Figure fishes flatworms fluid fossil freshwater function gametes gastropods gene genetic gills glands habitats hormones humans hydrostatic skeleton insects intestine invertebrates kidney larva layer leuconoid living lophophore lungs male mammals mantle cavity marine medusa membrane mesoderm metabolism molecules molluscs mouth muscle nematocysts nerve nervous system organs oxygen pair parasites particles pharynx Photograph phyla phylum plants plasma polyp population prey primitive produced protein protozoa pseudocoel radiation receptors reproduction reptiles secreted segments sensory shell skeleton species sperm sponges structure surface swimming tentacles tion tissue tube tubules usually ventral vertebrates worms