Enter your Name:   Enter your E-mail Address:  1. Write out the definitions for the following terms: 01a. Amniotic egg 01b. Hemotoxin 01c. Endothermic 01d. Placenta 01e. Gestation 02a. A vertebrate has a four-chambered heart, lays amniotic eggs with a lime-containing shell, and it has a light, porous skeleton. Is it a reptile, bird, or mammal? 03. A vertebrate has dry, tough scales, a three-chambered heart with a partial division in the ventricle, and it breathes with lungs. Is it a reptile, bird, or mammal? 04. A vertebrate has a four-chambered heart, hair, and nourishes its young with its own milk. Is it a reptile, bird, or mammal? 05a. These are the reptile orders that contain currently living reptiles: Crocodilia, Testudines, Phynchocephalia, Squamata Place the tuatara into its appropriate order. 05b. These are the reptile orders that contain currently living reptiles: Crocodilia, Testudines, Phynchocephalia, Squamata Place the lizard into its appropriate order. 05c. These are the reptile orders that contain currently living reptiles: Crocodilia, Testudines, Phynchocephalia, Squamata Place the crocodile into its appropriate order. 05d. These are the reptile orders that contain currently living reptiles: Crocodilia, Testudines, Phynchocephalia, Squamata Place the turtle into its appropriate order. 06. A vertebrate is endothermic. Is it possible that the vertebrate is a reptile? 07. Which kind of feather has hooked barbules: contour feathers or down feathers? 08. You find an egg in your back yard. It is covered in a soft, leathery shell. Is it a reptile egg or a bird egg? 09. A bird's feathers become inflexible because the hooked barbules do not slide easily on the smooth barbules. What should the bird do to fix this problem? 10. A mammal lives in a cold climate and needs a lot of insulation. Will its guardhair or underhair be thicker than the average mammal's? 11. Two species of cat are very similar in appearance. The first species gives birth to offspring that have no hair and whose eyes are closed. The second species gives birth to offspring that have a full coat of hair and whose eyes are open. Which species has the shorter gestation period? 12. Identify the structures in the amniotic egg pictured below: a. Structure A b. Structure B c. Structure C