Amphibians and Reptilia
Compared to the amphibians provide an example of evolutionary novelty which is present in beings of the class Reptilia which prevents the loss of water through the skin?
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Reptile skin is keratinized and impermeable to the water whereas skin of amphibian is permeable. This impermeability of the skin made impossible the cutaneous gas exchange which is performed by the amphibians and respiration became dependent on the internal organs such as lungs and airways.
Pharmacodynamics is the study of therapeutic value of drugs on the body. A graphical explanation of the Pharmacokinetics and Pharmacodynamics is given in Lapham and is reproduced here. Q : How can the morphology of embryo be After the neurula phase and from its ventral part to the dorsal how can the morphology of embryo be explained?
After the neurula phase and from its ventral part to the dorsal how can the morphology of embryo be explained?
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