Biology, a must have subject if you want to pursue career in medical stream. People say that biology is very tough as it only has to be crammed, but I say biology is very simple if you know what you are cramming. Moreover if you have PCMB, no doubt you will have to put in a little extra effort but it will open up the gates of both medical and non medical streams. From my personal experience I say, managing PCMB together is not difficult at all if you know what you are studying and why you are studying. It may happen that you do not get through in medical entrance examination, then the gates of non medical stream is still open for you. The key to success here is planning and successful implementation of your plan.

Download CBSE 2010 Class Xll Biology Sample Papers
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CBSE Syllabus Class 12 for 2010 : Biology

Biology: CBSE syllabus class 12 for March 2010 examinations.

COURSE STRUCTURE
Class XII BIOLOGY
One Paper Time: 3 Hours Marks : 70

Unit – Marks

1. Sexual reproduction - 12

2. Genetics and evolution -20

3. Biology and human Welfare -12

4. Biotechnology and its applications -12

5. Ecology and environment -14

TOTAL -70

I SEXUAL REPRODUCTION (35 Periods)

Pollination and fertilization in flowering plants. Development of seeds and fruits.
Human reproduction: reproductive system in male and female, menstrual cycle. Production of gametes, fertilization, implantation, ,embryo development, pregnancy and parturation. Reproductive health - birth control, contraception and sexually transmitted diseases.

II GENETICS AND EVOLUTION (45 Periods)

Mendelian inheritance. Chromosome theory of inheritance, deviations from Mendelian ratio (gene interaction- Incomplete dominance, co-dominance, complementary genes, multiple alleles). Sex determination in human beings: XX, XY. Linkage and crossing over. Inheritance pattern of haemophilia and blood groups in human beings. DNA: replication, transcription, translation. Gene expression and regulation. Genome and Human Genome Project. DNA fingerprinting. Evolution: Theories and evidences.

III BIOLOGY AND HUMAN WELFARE (35 Periods)

Animal husbandry.
Basic concepts of immunology, vaccines.
Pathogens, Parasites.
Plant breeding, tissue culture, food production.
Microbes in household food processing, industrial production, sewage treatment and energy generation.
Cancer and AIDS.
Adolescence and drug/alcohol abuse.

IV BIOTECHNOLOGY AND ITS APPLICATIONS (30 Periods)

Recombinant DNA technology.
Applications in Health, Agriculture and Industry
Genetically modified (GM) organisms; biosafety issues.
Insulin and Bt cotton

V ECOLOGY & ENVIRONMENT (35 Periods)

Ecosystems: components, types and energy flow.
Species, population and community.
Ecological adaptations.
Centres of diversity and conservation of biodiversity, National parks and sanctuaries.
Environmental issues.