| Term | Definition |
|---|
| sessile | organism that is permanently attached to a surface |
| invertebrate | animal without a backbone |
| vertebrate | animal with a backbone |
| endoskeleton | internal skeleton |
| exoskeleton | hard covering on the outside of some animals |
| symmetry | arrangement of body structures |
| filter feeding | method in which food particles are filtered from the water as it passes by or through some part of the organism |
| hermaphrodite | an animal that can produce both egg and sperm |
| mantle | a membrane that surrounds the internal organs in molllusks that secretes the shell |
| radula | the rasping, tonguelike organ in some mollusks that is used to drill, scrape, or cut food |
| appendage | any structure, such as a leg or antenna, that grows out of an animals body |
| molting | the periodic shedding of an old exoskeleton |
| metamorphosis | in insects, a series of chemically-controlled changes in body structure from juvenile to adult |
| internal fertilization | fertilization that occurs inside the female's body |
| external fertilization | fertilization that occurs outside the animal's body |
| asexual reproduction | type of reproduction where one parent produces one or more identical offspring without the fusion of gametes |
| sexual reproduction | pattern of reproduction that involves the production and subsequent fusion of haploid sex cells |
| regeneration | the replacement or regrowth of missing body parts |
Combine with other sets
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