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(Footprints without Feet)(Chapter - 6) (The Making of a Scientist), (Class - 10), Read and Find Out - I, Question 1:, How did a book become a turning point in Richard Ebright's life?, C. Answer 1:, It all started with Richard Ebright's interest in collecting butterflies. He also collected rocks, fossils, and coins. His mother said that by the time he was in the second grade, he had collected all the, twenty-five species of butterflies found around his home town. This would have been the end of his, butterfly collecting. Until his mother got him a book called "The Travels of Moarch X". This book told, him about the migration of monarch butterflies to Central America. It opened the world of science, to an eager young kid. This proved to be turning point in the life of young Richard Ebright. He began, to raise Monarch butterflies in the basement of his home, and study them in different stage of their, development., Question 2:, How did his mother help him?, . Answer 2:, Richard Ebright's mother helped him by encouraging his interest in learning. She took him on trips,, bought him telescopes, microscopes, cameras, mounting materials and other equipments, and, helped him in many other ways. He was her whole life after his father died. If Richard did not have, anything to do, she found things for him to do and learn. Even the book that became a turning point, in his life was given to him by his mother. Hence, it can be said his mother played a crucial role in, the making of the scientist., Read and Find Out - II, Question 1:, What lesson does Ebright learn when he does not win anything at a science fair?, L Answer 1:, Edbright realizes that mere display of something does not mean science. To win at a science fair he, will have to do real experiments. He said that his entry was slides of frog tissues under the, microscope while other who had won had tried to do real experiments., Question 2:, What experiments and projects does he then undertake?, Answer 2:, After he lost at the science fair he understood that he had to do real experiments instead to making, them look clean and neat. He made an experiment to find out what causes the viral disease that kills, nearly all monarch caterpillars every few years. He also undertook a project to test the theory that, vicerory butterflies copy monarches to survive., Question 3:, What are the qualities that go into the making of a scientist?, . Answer 3:, The author mentions three qualities that go as the perfect ingredients into the making of a, scientist-a first-rate mind, curiosity and the will to win for the right reasons., 1

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(Footprints without Feet)(Chapter - 6) (The Making of a Scientist), (Class - 10), Think about it, Question 1:, How can one become a scientist, an economist, a historian...? Does it simply involve reading many, books on the subject? Does it involve observing, thinking and doing experiments?, . Answer 1:, Science involves experiments, analysis, hypothesis and conclusions. By simply reading we can just, get facts but cannot get the reasons behind a particular result. Many diseases which were thought, to be incurable in the past have been overcome by means of scientific inventions and discoveries., Subjects like History or Economics may not be regarded as science in vague terms. But if we, go deep in these subjects, we find that Economics is a science of human behaviour and paradoxes., Either it is observing of human behaviour or historical building. It is the experiment which enables, us to form scientific theory., Question 2:, You must have read about cells and DNA in your science books. Discuss Richard Ebright's work in, the light of what you have studied. If you get an opportunity to work like Richard Ebright on projects, and experiments, which field would you like to work on and why?, Answer 2:, We know that by the process of gradual and continuous change, living organisms have evolved. After, a number of experiments, scientists have established that genes are the segments of DNA. These, DNA carries genetic information from generation to generation. Richard Ebright worked on his, basis. He raised flock of butterflies and raised the eggs of female Monarch. He studied the various, stages of female Monarch. He further studied the cause of a viral disease that killed all Monarch, caterpillars. Next he tried to find similarities between viceroy butterflies and monarchs. Study of, insect's hormone further give a new theory on the life of cells. They found the hormone behind, butterfly's full development. Thus, all these experiments led him to form a theory that cells grew, from a monarch's wings. The cell would divide and grow in a normal butterfly. If they were fed into, a hormone from the gold spots. Thus, he proved a new cell theory which formed the blue print of, DNA., If I am given a chance I would like to work in the sphere of stem cell which has a very wide, range and would be a great keep for future., Talk about it, Question 1:, Children everywhere wonder about the world around them. The questions they ask are the, beginning of scientific inquiry. Given below are some questions that children in India have asked, Professor Yash Pal and Dr Rahul Pal as reported in their book, Discovered Questions (NCERT, 2006)., (i) What is DNA fingerprinting? What are its uses?, (ii) How do honeybees identify their own honeycombs?, (iii) Why does rain fall in drops?, Can you answer these questions? You will find Professor Yash Pal's and Dr Rahul Pal's answers (as, given in Discovered Questions) on page 75., 2

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(Footprints without Feet)(Chapter- 6) (The Making of a Scientist), (Class - 10), L Answer 1:, (i) DNA carries genetic information to each living thing. DNA is inherited from parents to offsprings., DNA fingerprinting is important in Forensic Department. Even from a single hair or nail or a drop, of blood DNA can help us to find out the true culprit., (ii) Honeybees appear to have a good memory. They try to find through a clever dance language., The dance indicates the direction and distance of the food source. Thus they have a well-developed, direction finding mechanism and a way of reckoning distance., (iii) Rain is formed as a result of condensation of vapour when air is cooled below the dew point., The raindrops start out as tiny water droplet and on the way they collect moisture. The tiny drop, changes into bigger water droplets and fall on the ground as drops., Question 2:, You also must have wondered about certain things around you. Share these questions with your, class, and try and answer them., Answer 2:, There are many questions which are a questions of worry for me. Some of them are as follows:, > Why do rain bearing clouds appear black?, Why do some people snort during sleep?, Is there any material which does not burn in fire?, 3