| Question | Answer |
|---|---|
| amphibian | “double life”, start in water end on land |
| arachnid | animal that has eight legs and two body segments |
| arthropod | “jointed foot”, most number animals on earth |
| bilateral symmetry | animals that if divided down the middle will be the same on both sides |
| blubber | a fatty substance to insulate from cold |
| cartilage | a bonelike substance that is softer and more bendable than bone |
| cold-blooded | animals that rely on the environment for warmth |
| crustacean | sea creatures with at least five pairs of jointed legs and two pairs of antennae; they breathe through gills, and most have some sort of claw |
| echolocation | a technique used by some animals that involves making high-frequency clicks that bounce off objects and allow the animals to judge distance based on the time it takes the sound to return |
| exoskeleton | a hard covering that acts like a knight’s armor, protecting the arthropods body |
| filter feeder | feeds on particles or small organisms strained out of water by circulating them through its system |
| free-living | lives independent of other organisms |
| insect | Animal that has head, thorax (with 3 pairs of legs) and abdomen (most have two pairs of wings) |
| invertebrate | animal without a vertebral column |
| metamorphosis | a life cycle process from egg to adult |
| mollusk | typically have soft unsegmented body, a mantle (with or without shell) |
| molt | when arthropods shed their exoskeleton and grow a new one in order to grow |
| nematocyst | organ causing a sting |
| nocturnal | active at night |
| parasite | lives on or in a host |
| pod | a group of whales traveling together |
| pride | a group of lions living together |
| radial symmetry | animal that has body parts that repeat around a central part |
| setae | hairlike structures |
| spicule | thin, glassy spines |
| vertebrate | animal with a vertebral column |
| warm-blooded | animals that have a consistent internal temperature regardless of the environment |
