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Chp. 32 sec. 2
| Word | Definition |
|---|---|
| 1.) segmentation | the division of the body of an organism into a series of similar parts |
| 2.) exoskeleton | a hard, external, supporting structure that develops from the ectoderm |
| 3.) gill | in aquatic animals, a respiratory structure that consists of many blood vessels surrounded by a membrane that allows for gas exchange |
| 4.) open circulatory system | a type of circulatory system in which the circulatory fluid is not contained entirely within vessels; a heart pumps fluid through vessels that empty into spaces called sinuses |
| 5.) closed circulatory system | a circulatory system in which the heart circulates blood through a network of vessels that form a closed loop; the blood does not leave the blood vessels, and materials diffuse across the walls of the vessels |
| 6.) hermaphrodiite | an organism that has both male and female reproductive organs |
| 7.) larva | an independent and immature form of an organism that is morphologically different from the adult form |
| 8.) endoskeleton | an internal skeleton made of bone and cartilage |
| 9.) vertebra | one of the 33 bones in the spinal column (backbone) |
| 10.) integument | the covering of a body part or organ; the coat of the ovule |
| 11.) lung | the central organ of the respiratory system in which oxygen from the air is exchanged with carbon dioxide from the blood |
| 12.) kidney | one of the organs that filter water and wastes from the blood, excrete products as urine, and regulate the concentration of certain substances in the blood |
Created by:
sgcook123
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