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Q Is the tubular-dorsal nervous system of chordates associated to radial or lateral symmetry? How does that explain the complexity level of the nervous system reached by the vertebrate evolutionary branch?
The tubular and dorsal nervous system of chordates is related to the cephalization in these animals and to bilateral symmetry.
The presence of neural integrating centers with concentration of neurons in the brains and the spinal cord (CNS referred as central nervous system) allowed the increase of the interaction complexity between these environment and the animals. Receptor (afferent conduction) and efferent (motor, behavioral and regulatory reactions) functions come out more sophisticated in chordates due to the presence of more well-developed neural networks.
Explain the Recommended Dietary Allowances (RDA)? The recommended dietary allowances are estimates of nutrients to be consumed daily to ensure the requirements of all individua
Q. Do sponges have circulatory, nervous and excretory systems? Sponges do not have a nervous system neither excretory system nor circulatory system.
Plants are the source of a large variety of biochemicals which are metabolites of both primary and secondary metabolism. But secondary metabolites are of much greater interest s
TYPES OF EGGS Different species of animal has different type of eggs. They are classified on the following basis - 1 . ON THE BASIS OF AMOUNT OF YOLK On the ba
I HAVE TO MAKE A ASSIGNMENT ON RESPIRATION
functions of liver in frog?
Q. What do you mean by Alpha Taxonomy? This relates to the basic or preliminary classification based almost entirely on external morphology. This can be considered as the empir
Protozoans - Body Form The protozoan body is usually bound only by the cell membrane called plasmalemma. In some protozoans such as in ciliates the rigidity and the flexibili
What is the genetic condition in which the heterozygous individual has different phenotype from the homozygous individual? This situation is called lack of dominance and it can
Define Commodity Topics of Food Science? All issues of food science and technology of certain commodity groups, including milk and milk products (fluid milk and derivatives, ic
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