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45 Cards in this Set
- Front
- Back
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heterotrophs |
they obtain food from their enviorment |
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consumers |
heterotrophs |
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autotrophs |
organisms that make their own food (like plants) |
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poducers |
autotrophs |
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common features among animals (8) |
muscles reproductive system nervous system eating multicellular eukaryotes nucleus diploid |
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invertebrates |
animals without backbones |
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sponges (2) |
lack body symmetry and tissue |
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cnidarians (3) |
radially symmetrical. they have tissues and stinging cells |
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Polyp & Medusae |
Both cnidarians Polyp: Medusae: Fixed Free swimming asexual sexual |
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mollusks (5) |
bilateral symmetry visceral mass circulatory system shell, mantle, food radula |
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gastropod |
(snails and slugs) |
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bivalves |
(clams mussels and oysters) |
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cephalopods |
(squid and octopi) |
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echinoderms (5) |
larval bilateral symmetry spiny surface water vascular system and tube feet endoskeleton mouth |
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flatworms (6) |
bilateral symmetry gastrovascular cavity no true body cavity eyespots sex organs some are parasites |
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annelids (5) |
bilateral symmetry complete digestive tract closed circulatory system body cavity body segments |
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round worms |
bilateral symmetry complete digestive tract no body segments |
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arthropod |
bilateral symmetry body segments hard exoskeleton |
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arachnids |
spiders, scorpions, ticks, and mites most are terrestrial carnivores |
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crustaceans |
common arthropods in marine and freshwater habitats (shrimp, lobster, crab) |
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Insects |
out number all other animals combined. head, thorax, and abdomen |
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millipedes and centipedes |
have segmented bodies, which appear as many fused rings, each with jointed appendages attached. land dwelling |
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chordates (6) |
lancelets tunicates fishes amphibians reptiles mammals |
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chordate's features |
tail notochord hollow nerve cord pharyngeal slits |
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lancelets |
small animals that capture food by filtering water through their mouths |
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tunicates |
sessil and feed by filtering seawater |
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vertebrates |
have an endoskeleton |
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endoskeleton |
internal skeleton |
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hagfish |
have a skull but lack a recognizable backbone |
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lampreys |
have a skull and backbone but lack a jaw |
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cartilaginous fishes |
have flexible skeletons made of cartilage and must constantly move to keep water flowing through the gills |
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bony fishes |
the first group to have internal skeletons reinforced with calcium |
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lobe-finned |
have muscular fins supported by rod-shaped bones that are homologous to amphibian limb bones |
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tetrapods |
animals with four limbs |
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amphibians |
the first tetrapods |
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reptiles |
next step after amphibians in evolution (including birds) |
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amniotic egg |
hard waterproof shell |
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ectotherms |
non-bird reptiles, must obtain heat from the environment |
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endotherms |
birds metabolism maintains a warm, constant body temperature |
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groups of mammals (3) |
monotremes (egg-laying) marsupials (mature in pouches) eutherians (matures with a placenta) |
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placenta |
a flattened circular organ in the uterus of a pregnant eutherian mammal |
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cetaceans |
aquatic mammals |
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primates (5) |
the group humans belong to: large brains binocular vision limber joins, limbs, and digits complex behaviors extended parental care |
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hominins |
the human evolutionary branch, split off from the other primates around 5 to 7 mya |
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bipedalism |
a key human trait, walking on two legs |
