CLASS 10
THE MAKING OF A SCIENTIST
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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10
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15
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11
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12
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Detailed explanation-1: -The question he tried to answer was simple: What is the purpose of the twelve tiny gold spots on a monarch pupa? “Everyone assumed the spots were just ornamental, ” Ebright said. “But Dr Urquhart didn’t believe it.”
Detailed explanation-2: -These twelve tiny gold spots were believed to be ornamental only. The actual purpose of these tiny gold spots is to produce a hormone necessary for the butterfly’s full development.
Detailed explanation-3: -Answer. 12 gold spots were on a monarch pupa.
Detailed explanation-4: -Camouflage–they could reflect colors of the surroundings and break up the shape of the pupa; they might also look like dew droplets. Warning coloration. Filtering particular wavelengths of light which might be harmful to the monarchs.
Detailed explanation-5: -Ans. Ebright grew cells from a monarch’s wing to show that cells could divide and develop into normal butterfly wing scales only if they were fed with the hormones from the gold spots, Later, he identified the chemical structure of the hormone and found how cells can read the blueprints of its DNA.