KVPY Government Jobs Exams

Although blood flows through large arteries at high pressure, when the blood reaches small capillaries the
pressure decreases because-
(A) the valves in the arteries regulate the rate of blood flow into the capillaries
(B) the volume of blood in the capillaries is much lesser than that in the arteries
(C) the total cross-sectional area of capillaries arising from an artery is much greater than that of the artery
(D) elastin fibers in the capillaries help to reduce the arterial pressure

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KVPY Other Question
Rodents can distinguish between many different types of odours. The basis for odour discrimination is that-
(A) they have a small number of odorant receptors that bind to many different odorant molecules
(B) the mechanoreceptors in the nasal cavity are activated by different odorant molecules found in the air
passing through the nostrils
(C) the part of the brain that processes the sense of smell has many different receptors for odorant molecules
(D) a large number of different chemoreceptors are present in the nasal cavity that binds a variety of odorant
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(A) both the strands of DNA will be radioactive (B) one strand of DNA will be radioactive
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