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Q. Which is the vertebrate class that is considered the first entirely terrestrial?
Totally independent from the aquatic habitat, The first entirely terrrestrial vertebrate class, is the class Reptilia.
Q. Compared to amphibians what is an example of evolutionary novelty present in beings of the class Reptilia against the loss of water through the skin?
The reptile skin is impermeable and keratinized to water while the amphibian skin is permeable. The skin impermeability made impossible the cutaneous gas exchange performed by amphibians and respiration became dependent on internal organs like lungs and airways.
Q. What is Stenotic and regurgitant lesions? The normal cardiac valves offer little resistance to blood flow even when flow velocity is high. When stenosis develops, the valve
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Q. Since among the 64 codons of mRNA 61 codify amino acids that form polypeptide chains what are the functions of the three remaining codons? Since there are 20 amino acids and
What are the three main types of nitrogen wastes excreted by living beings? The major nitrogen wastes excreted by living beings are ammonia, uric acid and urea. Living beings t
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Explain in detail about the term behavioural neuropsychology Behavioural neuropsychology has been explained as 'the application of behaviour therapy techniques to problems of o
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