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Q. What is circulation?
Circulation is the movement of substances like gases within blood vessels and nutrients and cavities throughout the organism.
Q. Do all animals have a circulatory system?
Not all animals have a circulatory system Cnidarians, Poriferans, nematodes and platyhelminthes (in these there are the pseudocoelom fluid but no vessels) are avascular animals. Echinoderms do not have true circulatory systems whichever.
Munch Pressure Flow Model Munch, a German plant physiologist, proposed in 1930, a simple physical model which can be tested in the laboratory for the mechanism of phloem trans
Q. How is female gametophyte formed in angiosperms? Into the flower ovary there are megasporangia enclosed by a tegument having a small opening, the micropyle. Inside the megas
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 Regions? Beings of the class Reptilia are
Epimerism:- Another type of stereo isomerism known as epimerism occurs with respect to a single asymmetric carbon atom of a monosaccharide possessing more than one asymmetric
What is the Results of Congenital Pulmonary Stenosis? Early mortality for open pulmonary valvotomy in neonates varies between 6 and 10 per cent. For infants and children, surgi
Q. How is the depolarization of the neuronal plasma membrane generated? How does the cell return to its original rest? When the neuron receives a stimulus by the permeability o
Q. Explain Radiology of the heart? More than a century after its introduction to clinical practice, the chest radiograph (CXR) remains an important diagnostic tool in the routi
Why is the human placenta referred to as haemochorial type? Name the hormone it secretes to facilitate parturition.
Dinitrophenol, DNP, was prescribed in low doses in the 1940's to help obese patients lose weight. It's use for this purpose was discontinued when several users died. DNP makes the
Define Composition of Individual Phase in Phase Diagram - One Phase? The way in which we interpret a two-dimensional phase diagram to obtain the compositions of individual phas
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