Biology of Animals |
Contents
EVOLUTION OF ANIMAL LIFE PART | 1 |
Origin and basic molecules of life | 2 |
The cell as the unit of life | 25 |
Copyright | |
31 other sections not shown
Common terms and phrases
acetyl-CoA active adapted adaptive radiation adult amino acids amphibians animals annelids aquatic arthropods behavior biology birds blood body bone brain called canal capillaries carbon dioxide cavity cells characteristics chemical chromosomes cilia cnidarians coelom complex concentration contains cord cycle cytoplasm digestive dorsal echinoderms eggs electron embryo energy environment enzymes evolution feeding female fibers filaments fishes flatworms fluid freshwater function gametes genes genetic gills glands glucose hormone human insects intestine invertebrates kidney larva layer living lobe lophophore lungs male mammals marine membrane metabolism molecules molluscs mouth muscle nematocysts nerve nervous system neurons notochord organs osmotic oxidation oxygen pair parasites pharynx phyla phylum plants plasma population pressure primitive produce protein protozoa receptors release reproduction reptiles respiration respiratory secreted sensory shell sodium species sperm sponges structure substrate surface synthesis tentacles tissue tube tubule urine usually ventral vertebrates wings worms