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Moseley Bio Ch.3
vocabulary
| Term | Definition |
|---|---|
| classify | group things based on the features they share |
| phylum | subdivision of a kingdom (plural is phyla) |
| genus | a group of living things that includes separate species |
| species | a group of organisms that can breed with each other to produce offspring like themselves |
| scientific name | the name given to each species, consisting of its genus and it species label |
| vertebrate | an animal with a backbone |
| cartilage | a soft material found in vertebrate skeletons |
| vertebra | one of the bones or blocks of cartilage that make up a backbone |
| gill | a structure used by some animals to breathe in water |
| swim bladder | a gas-filled organ that allows a bony fish to move up and down in water |
| amphibian | a vertebrate that lives at first in water and then on land |
| metamorphosis | a major change in form that occurs as some animals develop into adults |
| reptile | an egg-laying vertebrate that breathes with lungs |
| cold-blooded | having a body temperature that changes with temperature of surroundings |
| warm-blooded | having a body temperature that stays the same |
| mammary gland | a milk-producing structure on the chest or abdomen of a mammal |
| invertebrate | an animal that does not have a backbone |
| cnidarian | an invertebrate animal that includes jellyfish, corals, and hydras |
| radial symmetry | an arrangement of bod parts that resembles the arrangement of spokes on a wheel |
| tentacle | an armlike body part in invertebrates that is used for capturing prey |
| flatworm | a simple worm that is flat and thin |
| bilateral symmetry | a body plan that consists of left and right halves that are the same |
| segmented worm | a worm whose body is divided into sections, such as earthworms or leeches |
| roundworm | a worm with a smooth, round body and pointed ends |
| mollusk | an invertebrate divided into three parts |
| arthropod | a member of the largest group of invertebrates which includes insects |
| molting | the process by which an arthropod sheds its external skeleton |
| crustacean | a class of arthropods that includes, crabs, lobsters, crayfish and sow bugs |
| arachnid | a class of arthropods that includes spiders, scorpions, mites and ticks |
| complete metamorphosis | changes in form during development in which earlier stages do not look like the adult |
| incomplete metamorphosis | changes in form during development in which earlier stages look like the adult |
| pupa | a stage in the development of some insects that leads to the adult stage |
| tube foot | a small structure used by echinoderms for movement |
Created by:
moseleyl