| A | B |
|---|
| 6 characteristics of animals | multicellular, use energy, obtain food and oxygen, movement, reproduce, grow and develop, |
| # of phyla in animal kingdom | 35 |
| characteristic of invertebrate | no backbone, smaller |
| simplest invertebrate, no symmetry, organs, tissues | sponges |
| the 5 major groups of vertebrate | birds, fish, amphibians, reptiles and mammals |
| 3 classes of fish | jawless, boney, cartilaginous |
| arthropod with 8 legs | arachnid |
| external covering of arthropods | exoskeleton |
| hydrostatic skeleton | a fluid-filled internal cavity surrounded by muscle tissue |
| the 2 hard skeletons | exoskeletons and endoskeletons |
| Nerve nets are found in which animals | radial symmetry and no brain |
| an open circulatory system | Blood is transported to open spaces in a body |
| A complex pattern of innate behavior | instinct |
| An area that an animal defends from other organisms | territory |
| An example of instinctive behavior in response to seasonal changes | hibernation |
| animal behavior attracts mates by competing with members of the same species | courtship |
| Once a newborn duckling hatches from its egg, it instinctively follows its mother around. | imprinting |
| bioluminescence | chemical reaction that occurs within living things and gives off light |
| spiracles | openings in abdomen for gas exchange |
| crop | sac that earthworms and birds use for food storage |
| reflex | an automatic response that does not involve the brain |
| gizzard | muscular structure that grinds food |
| conditioning | when a behavior is modified to respond to other stimuli |
| aggression | forceful act to dominate or control |
| society | members of species living in an organized way |
| 4 ways animals communicate | sound, light, chemicals, body language |
| 3 body parts o f insects | head, thorax and abdomen |
| characteristics of crustaceans | bilateral symmetry and jointed appendages in their mouth |
| difference of flatworms and roundworms | flatworms-2 way digestive system; roundworms-1 way digestive system |
| characteristics of reptiles | waterproof skin and lay leathery eggs |
