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q what are flight adaptations present by birdswings associated to a well-developed pectoral musculature less accumulation pneumatic bones of feces in
q what are the major morphological features of birdsbirds are animals that present aerodynamic bodies covered with feathers pneumatic bones anterior
q class reptilia identity card how are they characterized according to examples of representing beings basic morphology skin respiration circulation
q what is an instance of a hypothesis which may explicate why there is not a big representation of the class reptilia found in polar regionsbeings of
q concerning the maintenance of body temperature how do beings of the class reptilia classifylike amphibians and fishes beings of the class reptilia
q do beings of the class reptilia have indirect or direct developmentin beings of the class reptilia the embryonic development is direct so there is
q how is reproduction done in beings of the class reptiliathese beings reproduce sexually through internal fecundation by means of copulation between
q how has the importance of the brain evolved from fishes to reptilesfrom the least to the most complex brain structure it is evident that the brain
q which is the kind of nitrogen waste eliminated by beings of the class reptiliathese beings excrete mainly uric acid this substance is less toxic
q how is the circulatory system of reptiles characterized what is the basic difference between the amphibian and the reptile heartthe circulatory
q what are instances of a carnivorous and an herbivorous reptileiguanas are herbivorous snakes are carnivorousq do beings of the class reptilia
q which is the vertebrate class that is considered the first entirely terrestrialtotally independent from the aquatic habitat the first entirely
q amphibian identity card how are amphibians characterized according to examples of representing beings basic morphology circulation skin nitrogen
q what are the problems that vertebrates needed to solve to adapt to the terrestrial environment since they came from the aquatic habitat how
q why is the occurrence of eyelids in amphibians in comparison to their absence in fishes an adaptation to terrestrial lifeeyelids associated to
q is fecundation in amphibians internal or external in this aspect are amphibians evolutionarily proximal to fishes or to reptilesin the majority of
q how is excretion done in amphibiansadult amphibians have kidneys that filter blood nitrogen waste is excreted as urea so amphibians are ureotelic
q how different is the amphibian heart from the fish heartthe fish heart has only two chambers a ventricle and an atrium and the blood that comes to
q how is respiration performed by the larva of amphibiansthe larva of amphibians has exclusively branchial respiration this is one of the reasons why
q do amphibians have direct developmentin amphibians the embryonic development is indirect there is a larval stageq how different are the respiration
q what are the amphibian features that make them dependent on water to survivepermeable skinexternal fecundation body subject to dehydration larval
q which is the chordate class considered an evidence of the transition of the vertebrates from the aquatic to the dry land environmentthe amphibians
q fish identity card how are fishes characterized according to examples of representing beings skin basic morphology circulation nitrogen waste
q how different are fecundation in chondrichthyes and in osteichthyesin chondrichthyes fecundation is internal by resources of copulation in
q what are the lateral lines of fishesthe lateral lines of bony fishes are sense organs that extend along both sides of the animal body they make