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IGNOU BCA FST: FOUNDATION COURSE IN SCIENCE AND TECHNOLOGY - JUNE 2006 QUESTION PAPER

BACHELOR IN COMPUTER APPLICATIONS
Term-End Examination
June, 2006
FST: FOUNDATION COURSE IN SCIENCE AND TECHNOLOGY
Time : 3 Hours
Max. Marks : 100


Note : Your answers should be brief. Wherever possible, support your answers with facts and figures.

SECTION A
Answer all questions.

A1. (a) Give in one or two sentences, the major contribution of any three of the following scientists : (1×3=3)
(i) C.V. Raman
(ii) Ronald Ross
(iii) Charaka
(iv) Charles Darwin

(b) Give one term for each of the following : (1×3=3)
(i) A collection of billions of stars, and clouds of gas and dust.
(ii) Science of communication and control in machines and living organisms.
(iii) The technique of transmitting light waves through glass fibres.

(c) Fill in the blanks: (1×4=4)
(i) Trophic levels are the links in a __________________.
(ii) The hormone______________enables our body to metabolise sugar.
(iii) Wheat is our chief crop whereas rice is the chief kharif crop.
(iv) The_____________is the part of nervous system through which simple reflexes are routed.

A2. Answer each part briefly within 50 words (2×10=20)
(i) How is photochemical smog formed ?
(ii) Explain the term artificial intelligence.
(iil State two advantages of human factor engineering
(iv) State two main symptoms of kwashiorkor.

(v) List two technical innovations of medieval India.
(vi) Give one advantage and one limitation of radio as a medium of communication.
(vii) State the two major contributions of Arvabhatta.
(viii) Name any four renewable energy resources.
(ix) State two applications of laser in medicine.
(x) Which parts of the brain are involved in :
(a) regulation of body temperature
(b) maintaining the balance of the body

SECTION B

Answer any eight questions Each question carries five marks. Answer each question within 100 words

B1. What is mixed cropping ? Give an example .State three advantages of this agrotechnique (1+1+3=5)

B2. Mention five different ways in which the environment has been adversely affected due to technological advances (1×5=5)

B3. Describe the atomic theory given by Kanad.
B4. What is remote sensing ? Describe how remote sensing helps to survey vegetation cover. (2+3=5)
B5. Distinguish between hypothesis and theory’ Give an example in support of Your answer. (3+2=5)

B6. List any four modes of communication being used by IGNOU to impart education’ Which one of these is most useful for You and why ? (2+3=5)

B7. What is vaccination ? How does it protect us from infections ? Name any four diseases that are prevented by vaccination. (7+2+2=5)

B8. What is the Big Bang theory of the origin of the universe?List three evidences in support of this theory.

89. What is biotechnology ? List any three applications of biotechnology (2+3=5)

B10. Differentiate Between nuclear fission and nuclear fusion. Draw the diagram of a chain reaction. (2+3=5)
B11. Differentiate between stimulus and response. Describe Pavlov’s experiment on learning.(2+3=5)

SECTION C

Answer any three questions. Each question carries ten marks. Answer each question within 250 words.
C1. Explain how the needs of city based civilizations led to scientific and technical advancements in the ‘Bronze Age’. Select any five areas. (2×5=70)

C2. What is water cycle ? Discuss the impact of human activities on water cycle. Suggest any two measures to prevent the adverse impact of these activities. (2+6+2=70)

C3. “Science and technology have played a vital role in transforming our way of life through the ages.” Justify the statement with the help of examples from the transport sector. (2×5=70)

C4. Differentiate between chemical evolution and biological evolution. Discuss briefly any two evidences in favor of biological evolution. (4+6=10)

C5. What is technology forecasting ? Explain why it is an important area of study. Mention two areas in which technology forecasting would be useful and why. (2+4+4=10)

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