What is the special feature present in a human heart which does not allow mixing of blood when oxygen-rich and carbon dioxide-rich blood reach the heart?
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why is a person with blood group 'o' considered a universal donor ? what is special in such blood group ?
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In which of the following vertebrate group/groups, heart does not pump oxygenated blood to different parts of the body?
(d) Pisces only
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Describe the flow of blood through the heart of human beings.
Hints— Atrium Ventricles Oxygenated blood De-oxygenated blood
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A man with blood group A marries a woman with blood group O and their daughter has blood group O.
No. This information is not sufficient to determine which of the traits − blood group A or O − is dominant. This is because we do not know about the...
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Which among the following is the special feature that distinguishes a pressure group from a political party?
(c) Pressure groups do not seek to get into power, while political parties do.
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Veins have valves which allow blood to flow only in one direction. Arteries do not have valves.
Blood flow in arteries is rapid and at a high pressure. Also arteries have thick elastic walls.
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Ravi, the Marketing Manager of Weaver Garments Ltd. does not allow the salesmen working under
Status, Answer is correct
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Ravi, the Marketing Manager of Weaver Garments Ltd. does not allow the salesmen working under ,
Status. Answer is correct
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A ‘black hole’ is a body in space which does not allow any radiation to come out. This property is due to its:
(c) A black hole is a region of space from which nothing, not even light, can escape. It is the result of the deformation of spacetime caused by a very...
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Some species of plants are insectivorous. Why ? (a) Their growth in shady and dark places does not allow them to undertake sufficient photosynthesis
(b) Insectivorous plants prey insects because most of the insectivorous plants grow in those area where there is deficiet of nitrogen in nutrients so they catch insect to fulfil its...
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