OTBA Guidance Document Class 11 Biology Revision Notes
Class 11 Biology students should refer to the following concepts and notes for OTBA Guidance Document in standard 11. These exam notes for Grade 11 Biology will be very useful for upcoming class tests and examinations and help you to score good marks
OTBA Guidance Document Notes Class 11 Biology
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.
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
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.
b) Bulimia nervosa
c) Mental illness
d) Addiction related diseases
e) Gall bladder stone
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
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
Please click the link below to download pdf file for CBSE Class 11 Biology OTBA Guidance Document II.
|CBSE Class 11 Biology The Living World Notes|
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|CBSE Class 11 Biology Animal Kingdom Notes|
|CBSE Class 11 Biology Morphology Of Flowering Plants Notes|
|CBSE Class 11 Biology Anatomy Of Flowering Plants Notes|
|CBSE Class 11 Biology Structural Organisation In Animals Notes|
|CBSE Class 11 Biology Cell The Unit Of Life Notes|
|CBSE Class 11 Biology Biomolecules Notes|
|CBSE Class 11 Biology OTBA Guidance Document Set A|
|CBSE Class 11 Biology OTBA Guidance Document Set B|