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Q. What is the difference between simple closed circulation and double closed circulation?
Double closed circulation or Closed circulation is that in which the blood circulates through two associated and parallel vascular systems one that carries blood to and takes blood from the peripheral tissues that the systemic circulation and the other that carries blood to and takes blood from the tissues that perform gas exchange with the environment, for example, the lungs that is pulmonary circulation. Double circulation occurs in reptiles, amphibians, mammals and birds. Simple closed circulation or simple circulation is the one in which the tissues that perform gas exchange are associated in series with the systemic circulation as in fishes.
What are the subkingdoms into which the plant kingdom is divided? The kingdom Plantae is separated into two big subkingdoms: the bryophytes and the tracheophytes (pteridophytes
Q. What is the significance of proteins for living beings? Proteins play an essential role in nearly all biological processes. Due to their variety they can suppose many divers
Some plants and animals originate food contain toxic substances. Some pulses and legumes contain a number of toxic substances such as protease inhibitors, lathyrogens, and flavism
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What is Muller Manoeuver explain in details? In this manoeuver, patient forcibly inspires while the nose is held closed and mouth firmly sealed for 10 seconds. It exaggerates t
Blastula is the ball of cells surrounding a fluid-filled cavity (known as blastocoel) which is produced by the cleavage of a zygote.
Significance of Mitosis 1. Reproduction ; William Bateson 1906 wrote, Whenever I observe a dividing cell under the microscope , I feel as if the original act of c
Q. Minerals requirements during congestive cardiac failure? Minerals: Since sodium and potassium are the major electrolytes associated with oedema, it is important that sodium
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