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Science Explosion 06
BJU 6th Science - Chapter 5
Question | Answer |
---|---|
Invertebrate | animal without a vertebral column |
Vertebrate | has vertebral column |
Nematocyst | organ causing a sting |
Mollusk | typically have soft unsegmented body, a mantle (with or without shell) |
Filter feeder | feeds on particles or small organisms strained out of water by circulating them through its system |
Parasite | lives on or in a host |
Free-living | lives independent of other organisms |
Segment | one of many similar pieces that make up the soft body of a segmented worm. |
Arthropod | “jointed foot”, most number animals on earth |
Exoskelton | a hard covering that acts like a knight’s armor, protecting the arthropods body |
Molt | when arthropods shed their exoskeleton and grow a new one in order to grow |
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 |
Arachnid | have eight legs and two body segments |
Insect | have head, thorax (with 3 pairs of legs) and abdomen (most have two pairs of wings) |
Metamorphosis | a life cycle process from egg to adult |
Incomplete Metamorphosis | egg à nymph à adult |
Complete Metamorphosis | egg à larva (caterpillar) à pupa (chrysalis) à adult |
Cold-blooded | animals that rely on the environment for warmth |
Cartilage | a bonelike substance that is softer and more bendable than bone |
Amphibian | “double life”, start in water end on land |
Omnivore | an animal that eats both plants and animals |
Herbivore | an animal that eats only plants |
Carnivore | an animal that eats only meat |
Warm-blooded | animals that have a consistent internal temperature regardless of the environment |
Insectivore | an animal that eats mainly insects |
Nocturnal | active at night |
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 |
Pride | a group of lions living together |
Blubber | a fatty substance to insulate from cold |
Pod | a group of whales traveling together |