more on reptiles, birds, and mammals
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| What is true about the skin of reptiles | covered with scales... sometimes hard to grow larger so must molt
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| in the amniotic egg or mammals what is the membrane around the embryo that is filled with fluid and protects the embryo... this mimics the aquatic environment | amnion
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| what is true about the protective shell covering in reptiles and birds | they both have a hard covering around the egg to prevent it from drying out and to give protection. the reptile is leathery and the bird has a shell made of minerals ( calcium carbonate)
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| What is true about the circulation of the reptiles ( the loops and the heart) | they have a double loop system ( like amphbians and mammals)... they have a 3 chambered heart in most ( it has a little more separation in the ventricle than the amphibian heart)... the crocodilia has a 4 chambered heart ( more efficient)
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| What helps the reptiles with locomotion on land | the toes have claws, they have heavier, stronger bone structure to bear more body weight on land)... the legs are moving underneath the body for better locomotion
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| How is a lizard different from a snake | lizards have legs with clawed toes, moveable eyelids, a tympanic membrane ( an eardrum on the side of their head), and longer tails
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| what name is given to a turtle that lives on land | tortoise
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| What is true about the backbone of a turtle and its teeth | the backbone is fused to the shell and they don't have teeth ( they have a beak)
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| How are crocodilia different from other reptiles | they have a 4 chambered heart and they build nests and take care of their young
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| Birds are the only vertebrates with ? as body coverings | feathers
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| Birds share characteristics with ?... a close relative | reptiles (amniotic eggs, and scales on their legs)
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| What are bird adaptations for flight | being an endotherm, feathers, lightweight but strong bones, a 4 chambered heart and 2 loop circulatory system, and air sacs on their lungs for better oxygenation
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| what are two unique features of mammals | hair and mammary glands
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| what is found in a mammal that produces and secretes milk to nourish developing young | mammary glands
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| How is the mammal an amniote | it doesn't have a shelled egg ... but still has the same membranes to help the embryo develop... a very important membrane is the Amnion
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| What is true about the teeth of mammals | they have specialized teeth for various functions ( canines tear meat, incisors, premolars, and molars... grinding)
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| what helps mammals to get more oxygen and get rid of the carbon dioxide more efficiently | a diaphragm
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| What is true about the circulation of mammals | they have a two loop system ( not new) and a 4 chambered heart
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| Who are the egg laying mammals with poorly developed mammary glands | monotremes
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| who are the pouched mammals with a short gestation in the uterus and then crawl into the pouch to complete development and get nourishment | marsupials
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| What structure develops between the mother and the developing embryo of many mammals to provide food and oxygen to and remove wastes from the developing young in the uterus | placenta
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| Is the placenta always in the female placental mammals body? | no only during pregnancy... it is expelled after birth
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| What portion of a herbivore digestive tract has bacteria located within to help digest the cellulose | cecum
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| Which mammal has a short digestive system because their diet is easy to digest and they don't have a cecum | insectivore ( like a mole)
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| which mammal has a stomach that starts digestion and absorption of nutrients and they have a large cecum with bacteria to help break down cellulose ( our rat will have this) | a nonruminant herbivore
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| which mammal has a 4 chambered stomach to work on breaking down plant material ( they chew cud... keep bringing it up and chewing it again).. and they have long intestines and a cecum to increase nutrient absorption | Ruminants ( deer and cow)
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| which mammal also has a diet that is pretty easy to digest so they have a shorter intestinal tract ... they have a cecum but it is small and serves to vital function for their digestion | a carnivore such as a fox , dog, or cat
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