REPTILIA

-excretion by two kidneys and bladder (mainly excrete urea) -digestion: low metabolism, unable to divide food--> leads to slow digestion || -take in all oxygen thru lungs -turtles use cloaca for gas exchange -bask in sun when too cold -absorb external heat-ectotherms -do not use metabolism to control body temperature || -turtles have shells || -fertilization happens internally, before the shell is secreted as it goes thru the female reproductive system -some vivparous-extraembryonic membranes form a placenta -most oviparous (eggs) -some can asexually reproduce || -egg before birth -after birth, they grow into adulthood in their same form || -acute chemical senses; can sense ground vibrations, heat detecting organs || -chemical sensors -have cerebrum and cerebellum slightly larger than amphibians-->12 pairs of cranial nerves ||
 * =**Phylum**= || Tamara D. and Andrea G.: sorry, don't write all of this down; just write basics ||
 * **1. Examples** || Testudines (turtles), Sphenodontia (tuataras), Squamata (lizards and snakes), Crocodilia (alligator and crocodiles) ||
 * **2. Habitats** || -some live on land, or burrow; others in water; generally live in warm climates (can be found on almost every continent on Earth) ||
 * **3. Mode of feeding, digestive, excretory** || Heterotrophs: some use poison to kill prey; snakes have loose jaws to swallow prey whole
 * **4. Internal Transport****(circulation & respiration)** || Heart with two atria leading to systematic circulation
 * **5. Symmetry & Support,**===Locomotion, body covering, lol=== || have scales made of protein keratin-makes them waterproof
 * **6. Fertilization &Reproduction****(sexual/ asexual)** || lay shelled amniotic eggs on land (eggs made of yolk and amnion)
 * **7. Body Forms (life stage forms)** || Main stages:
 * **8. Defense / senses/ response to environment** || all heat absorbed
 * **9. Nervous system** || -acute senses--can sense small temperature changes
 * **10. Importance (how it fits into****the world)** || -sometimes carniverous ||
 * **Misc.** || can survive on less than 10% of the calories required by mammals ||