CBSE Deleted Syllabus For Class 12 Biology: Download Free PDF

CBSE Deleted Syllabus For Class 12 Biology: Biology is a very important and main subject of Class 11and Class 12 Science stream. Biology is a subject of the Medical stream. Biology is a theoretical and concept-based subject. So if a student’s concepts are not clear, he/she cannot score good marks in this subject. So student needs to practice well for scoring high marks in this subject. Class 11 must study thoroughly each and every subject so as to create a strong base for class 12.

CBSE Deleted Syllabus For Class 12 Biology

Due to the Covid-19 situation, no proper school functioning is taking place. There is increasing stress on student’s shoulders and it is very difficult to cover the entire syllabus in online classes. So CBSE has decided to reduce the syllabus by 30% of all classes.

Here student can check the deleted portions from Biology subject for the Class 12 2020-21 academic year:-

UNIT NUMBER UNIT NAME DELETED TOPICS
 

 

 

 

VI

 

 

 

 

Reproduction

 

Chapter-1: Reproduction in Organism

 

Reproduction, a characteristic feature of all organisms for continuation of species; modes of reproduction – asexual and sexual reproduction; asexual reproduction – binary fission, sporulation, budding, gemmule formation, fragmentation; vegetative propagation in plants

 

 

 

 

 

 

 

VII

 

 

 

 

 

 

Genetics and Evolution

 

Chapter-7: Evolution

 

Origin of life; biological evolution and evidences for biological evolution (paleontology, comparative anatomy, embryology and molecular evidences); Darwin’s contribution, modern synthetic theory of evolution; mechanism of evolution – variation (mutation and recombination) and natural selection with examples, types of natural selection; Gene flow and genetic drift; Hardy – Weinberg’s principle; adaptive radiation; human evolution.

 

 

 

VIII

 

 

 

Biology and Human Welfare

 

Chapter-9: Strategies For Enhancement in Food Production

 

Animal husbandry, Plant breeding, tissue culture, single cell protein.

 

 

 

 

 

 

 

 

X

 

 

 

 

 

 

 

Ecology and Environment

 

 

 

Chapter-14: Ecosystem

 

Ecosystems: Patterns, components; productivity and decomposition; energy flow; pyramids of number, biomass, energy; nutrient cycles (carbon and phosphorous); ecological succession; ecological services – carbon fixation, pollination, seed dispersal, oxygen release (in brief).

 

Chapter-16: Environmental Issues

 

Air pollution and its control; water pollution and its control; agrochemicals and their effects; solid waste management; radioactive waste management; greenhouse effect and climate change impact and mitigation; ozone layer depletion; deforestation; exemplifying case study as success story addressing the environmental issue(s).

Deleted Portion In Practical’s

A: List of Experiments

  1. Study the presence of suspended particulate matter in air at two widely different sites.
  2. Study the plant population density by quadrat method.
  3. Study the plant population frequency by quadrat method.
  4. Study/Observation of the following (spotting)
  5. Pollen germination on stigma through a permanent slide or scanning electron micrograph.
  6. Mendelian inheritance using seeds of different colour/sizes of any plant.
  7. Controlled pollination – emasculation, tagging and bagging.
×

Download success!

Thanks for downloading the guide. For similar guides, free study material, quizzes, videos and job alerts you can download the Adda247 app from play store.

Thank You, Your details have been submitted we will get back to you.

Leave a comment

Your email address will not be published. Required fields are marked *

×
Login
OR

Forgot Password?

×
Sign Up
OR
Forgot Password
Enter the email address associated with your account, and we'll email you an OTP to verify it's you.


Reset Password
Please enter the OTP sent to
/6


×
CHANGE PASSWORD