cbse class 12 biology syllabus 2011-12 - http://cbse.edurite.com/cbse-biology/cbse-biology-syllabus-for-class-12.html

1. w
w
w
.edurite.com
111
10. Tostudyhumanskeletonanddifferenttypesofjoints.
Syllabus – Biology (XII)
One Paper Time: 3 Hours Marks : 70
Unit Marks
6. Reproduction 14
7. Geneticsandevolution 18
8. Biologyandhumanwelfare 14
9. Biotechnologyanditsapplications 10
10. Ecologyandenvironment 14
Total 70
UNIT-VI REPRODUCTION (35 Periods)
Reproductioninorganisms:Asexualandsexualreproduction.Sexualreproductioninflowering
plants:Structureofflower,pollination,fertilization,developmentofseedsandfruits,apomixis
andpolyembryony.
Humanreproduction: Reproductivesysteminmaleandfemale,menstrualcycle,production
ofgametes,fertilization,implantation,embryodevelopment,pregnancy,parturitionandlactation.
Reproductive Health : Problems and strategies, Population and birth control, contraception
andMTP;sexuallytransmitteddiseases,infertility.
UNIT-VII GENETICSAND EVOLUTION (45 Periods)
Mendelianinheritance.
Chromosometheoryofinheritance,deviationsfromMendelianratio(geneinteraction-incomplete
dominance,co-dominance,multiplealleles).
Sexdeterminationinhumanbeings:XX,XY.
Linkageandcrossingover.
Inheritancepattern:Mendeliandisordersandchromosomaldisordersinhumans.
DNAandRNA,searchforgeneticmaterial,replication,transcription,geneticcode,translation.
Geneexpressionandregulation.
Genome and Human Genome Project.
DNAfingerprinting.
Evolution:Originoflife,theoriesand evidences,adaptiveradiation,mechanismofevolution,
originandevolutionofman.

2. w
w
w
.edurite.com
112
UNIT -VIII BIOLOGYAND HUMAN WELFARE (35 Periods)
Basicconceptsofimmunology,vaccines.
Pathogens, Parasites
Cancer andAIDS
Adolescence and drug / alcohol abuse.
Plantbreeding,tissueculture,singlecellprotein,foodproduction,animalhusbandry.
Microbes in household food processing, industrial production, sewage treatment, energy
generation,biocontrolagentsandbiofertilizers.
UNIT-IX BIOTECHNOLOGYAND ITSAPPLICATION (30 Periods)
PrinciplesandProcesses;RecombinantDNAtechnology;ApplicationsinHealthandAgriculture;
geneticallymodified(GM)organisms;biosafetyissues.
UNIT -X ECOLOGY & ENVIRONMENT (35 Periods)
Organism and Population : Organism and its environment, populations and ecological adaptations.
Biodiversity, its importance and conservation, Biosphere Reserves, National Parks and wild life
sancturies.
Ecosystems:components,types,energyflow,nutrientcyclingandecosystemservices.
Environmentalissues.
Recommended Textbook.
Biology textbook for Class XII, Published by NCERT
Practicals
Time: 3 Hours Marks : 30 60 Periods
1. Experimentsandspotting 20 marks
2. Record of one investigatory project and Viva based on the project 5 marks
3. Class record and Viva based on experiments 5 marks
30 marks
List of Experiments
1. Disect the given flower and display different whorls. Disect anther and ovary to show
numberofchambers.
2. Studypollengerminationonaslide.
3. Collectandstudysoilfromatleasttwodifferentsitesandstudythesefortexture,moisture
content,pHandwaterholdingcapacityofsoil.Correlatewiththekindsofplantsfoundin
them.

3. w
w
w
.edurite.com
113
4. Collect water from two different water bodies around you and study the samples for pH,
clarityandpresenceofanylivingorganisms.
5. Studythepresenceofsuspendedparticulatematterinairatthetwowidelydifferentsites.
6. Study of plant population density by quadrat method.
7. Prepare a temporary mount of onion root tip to study mitosis
8. To study the effect of the different temperatures and three different pH on the activity of
salivaryamylaseonstarch.
Study/observation of the following (Spotting)
1. Studyofflowersadaptedtopollinationbydifferentagencies(wind,insect)
2. Studyofpollengerminationon stigmathroughapermanentslide.
3. Study and identify stages of gamete development i.e.T.S. testis andT.S. ovary through
permanentslides.(fromanymammal)
4. Studymeiosisinonionbudcellorgrasshoppertestisthroughpermanentslide.
5. Study of T.S. of blastula through permanent slide.
6. StudyMendelianinheritanceusingseedsofdifferentcolour/sizeofanyplant.
7. Study prepared pedigree charts of genetic traits such as rolling of tongue, blood groups,
widow’s peak, colour blindness.
8. Exerciseoncontrolledpollination-Emasculation,taggingandbagging.
9. To identify common disease causing organisms likeAscaris, Entamoeba, Plasmodium,
Ringwormthroughpermanentslideorspecimen.Commentonsymptomsofdiseasesthat
theycause.
10. Study two plants and two animals found in xeric conditions. Comment upon their
adaptations/morphologicalfeatures
11. Study plants and animals found in aquatic conditions. Comment upon their adaptations/
morphologicalfeatures.