CBSE Class 11 Biology OTBA Guidance Document Set 02

CBSE Class 11 Biology OTBA Guidance Document II. Learning the important concepts is very important for every student to get better marks in examinations. The concepts should be clear which will help in faster learning. The attached concepts made as per NCERT and CBSE pattern will help the student to understand the chapter and score better marks in the examinations.

Sample Paper 

Theme: Life and Living

One Mark Questions

Q.1 Study statistics-1 and comment on the questions:

a) For how many years 57.3% people want to live?

b) What percent of people want to live for 120 years?½+½

Ans. a) 80 Years

b) 29.1

Q.2 What are couch potatoes? 

This term is used for people who prefer to stay indoors sitting on sofa eating and watchingthe  TV  for  long  hours  of  leisure  rather  than  playing  outdoors  or  doing  some  physicalexercise. It leads to obesity and related disorders.

Two Mark Questions

Q.3 How has the picture of “India shining” proved detrimental to the country’s youth? 

Ans. India  shining  has  been  reflected  through  the  economic  growth  and  prosperity  which  thecountry  can  boast  of.  Unfortunately  this  trend  has  caused  youth concentrating  in  themetros  and  progressive  urban  cities.  To earn  higher  and  at  a  faster  rate  and  fulfil  theircorporate  life  styles  compels them to  work  for  longer  periods  and  adopt  indiscipline lifstyles causing serious health problems which are being neglected.

Q.4 What difference in eating habits is seen in the present youth compared to the pastgenerations?

Ans. Fast  food  and  eating  out  are  an  integral  part  of  modern  teenagers.  Self -planned  dietprograms are made by them either to be slimmer (for girls) or be more muscular (for boys)is causing serious damage to their health which is a matter of concern. In modern living andjob  nature  there  has  been  a  significant  reduction  in  physical  exercise  and  signif icantlyincrease in high calorie diet leading to obesity and related disorders. Working with othercountries having a different time slot like the US versus India.

Q.5 What is Vision 2020? 

India  Vision  2020  was  initially  a  document  prepared  by  the  Technology  Information,Forecasting  and  Assessment Council  (TIFAC)  of  India's Department  of  Science  andTechnology under  the  chairmanship  of  Dr.  A  P  J  Kalam  and a  team  of  500  experts.  Thedetails of this plan may be read in the book India 2020: A Vision for the New Millennium,which Dr. A P J Abdul Kalam coauthored with Dr. Y.S. Rajan. Education and Health care isone  of  the  five  areas  identified  where  illiteracy,  social  security  and  overall  health  of  thepopulation will be taken care of.

Q.6 Study picture -2 and answer the following questions:

a) What percent of boomers admit that they exercise less than once a week?

b) What do 30% people think about their health?

a) 20% i.e 1 out of 5 think that they exercise less than once a week

b) 30% think that they are always under stress.

Q.7 If  you  study  the  statistics  given  by  NIH  (refer  to  statistics-5)  on  prevalence  ofsmoking,  it  is  found  that  there  is  a  decline  in  the  percentage  of  adult  smokerscompared  to  high  school  smokers.  What  can  be  the  possible  reason?  Give  yourown thoughts.

a) High  school  students  are teenagers.  Their  curiosity,  transitory  adult  attitude  andheroism attract smoking.

b) Misconception  that  smoking  relieves  stress  and  mental  tiredness  increases  youngsmokers.

c) By  the  time  they  grow  into  adults,  many  realize  the  ill  effects  of  smoking,  somesuffer from health problems and give up smoking. Naturally the percentage of adultsmokers’ reduces.

Q.8 Enumerate the economic loss India is expected to incur only due to unhealthy lifestyles.

Ans. a) India is expected to incur a loss of 236.65 Billion by 2015 due to poor life style anddefective diet.

b) 31.2% urban population is obese

c) 2 out of 3 employees are victim of stress

d) India became the Diabetic capital of the world

e) India leads any other country by 4% in having life style diseases.

Three Mark Questions

Q.9 Growth  of  professionalism  in  youth  is leading  to  serious  health  hazard.  Explain how?

Ans. It has caused drastic change in lifestyle due to their higher income. Consuming high caloriefast food, smoking, alcoholism and also drug consumption has become more dependablethan the traditional life styles. The tension for completing the time bound work led to longhours sitting in front of computer screens ending up the day with no physical work invitinghigh blood pressure, obesity and other diseases. Often youth give up breakfast and mealsand also  reduce  the  sleeping  period  to  increase  their  working  hours  leading  to  series  ofdisorders.

Q.10 Enlist the common health problems arising due to today’s life style. 

a) Obesity

b) Bulimia nervosa

c) Mental illness

d) Addiction related diseases

e) Gall bladder stone

f) Stress

g) High Blood Pressure and Blood sugar

h) Non- alcoholic fatty liver disease

i) Cardio-vascular disorders etc.

Q.11 Study picture-3 and answer the following questions:

a) Name any four substances in a cigarette which are cancer causing.

b) Part  of  a cigarette  smoked  contains  poisonous  substances.  The  unburntpart (called filter) also contains poisonous substances. Name them.

c) Name  the  substance  which  is  a  non- biodegradable  pesticide  found  incigarettes.

Ans. a) Polonium 210 / Cadmium/ Pyrene/ Urethane/ etc

b) DDT/ Carbon monoxide/Vinyl chloride

c) DDT

Q.12 Mention the highlights of the survey report of the year 2011 by NHMS. 

Ans a) Diabetes increased from 11.6% (2006) to 15.2%

b) Hypertension (in adults above 30 years) increased from 32.2% (2006) to 32.7%

c) Obesity increased from 4.4% (1996) to 15.1% almost 3.5 folds

Q.13 Life  style  diseases  are  spreading  very  rapidly.  Still  there  is  a  positive  aspect  ofthese diseases since they are potentially preventive. How can it be done?

Ans. a) changing the diet

b) change in life style

c) proper sleeping habit

d) age appropriate and regular exercise

e) effective handling of stress

f) good work-life balance

g) abstaining alcohol and smoking

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