biology
Help!
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| aorta of aves | only right aorta and bends backwards
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| rataitae or running birds | penguin hen ostrich kiwi
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| features that help aves to fly | feathers air sockets absence of urinary bladder
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| eggs characteristics | large with much yolk
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| reproduction in aves | internal fertilization lay eggs sexes separate only one oviduct and ovary are functional
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| gizzard | crushes food in aves
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| what is syrnix | it is the voice box in aves
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| respiration and metabolism | endothermic warm blooded respiration by lungs
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| body division and parts | head neck trunk tail,neck is long tail is short
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| two pairs of pendactyl limbs | forelimbs form wings hind limbs are strong and adapted for perching swimming etc each foot bears 4 toes armed with horny claws
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| further structures | skin consists of feathers all over and scales on feet skull has sockets and beak without teeth
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| excretory system | cloaca opening two kidney and ureters no urninary bladder semi solid uric acid
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Created by:
sundas bano
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