NEB Class 12 Biology study plan

NEB Class 12 Biology · Give each week a clear focus.

8 weeks · About 7 hours per week

Week 1

Biology (Grade 12) - content domains not enumerated in source

Define and distinguish the core terminology of the heaviest units (genetics, molecular biology, reproduction) using your own one-line definitions for at least 60 terms
Draw and label the stages of mitosis and meiosis from memory, then annotate the points of difference between them
Explain the central dogma (replication, transcription, translation) aloud in under three minutes without notes
Build a master syllabus map that ranks every chapter by marks weight and your current confidence

A one-page syllabus map with all chapters ranked by weight and confidence, plus a 60-term glossary in your own words

Week 2

Solve monohybrid and dihybrid cross problems, including test crosses, step by step for at least 15 problems
Derive phenotype and genotype ratios for incomplete dominance, codominance, and multiple alleles without referring to notes
Interpret pedigree charts and identify the mode of inheritance in at least 5 given pedigrees
State the chromosomal basis of sex determination and sex-linked inheritance with worked examples

A solved problem set of 20 genetics questions with full working shown and errors corrected in a different colour

Week 3

Describe the structure and replication of DNA, including the roles of the key enzymes, in a labelled diagram drawn from memory
Explain transcription and translation with correct sequence of events and the role of each type of RNA
Outline the experiments that established DNA as the genetic material and describe the genetic code properties
Solve numerical problems on DNA base composition and base pairing

A hand-drawn molecular biology flowchart from DNA to protein with a 10-question self-test answered correctly at 80% or above

Week 4

Describe the stages of human reproduction, gametogenesis, and the menstrual cycle in correct sequence
Explain fertilisation, implantation, and embryonic development with correct terminology
Compare the major methods of contraception and assisted reproductive technologies by mechanism and limitation
Answer past-paper short-answer questions on reproduction under timed conditions

A labelled diagram set of the male and female reproductive systems plus a timed 25-mark practice section scored and reviewed

Week 5

Explain the principles of Mendelian and chromosomal disorders with at least three named examples and their inheritance patterns
Describe the theory of evolution, evidence for it, and the mechanisms of natural selection and speciation
Outline the Hardy-Weinberg principle and solve basic allele-frequency problems
Summarise human evolution and the key fossil and molecular evidence in a sequence

A comparison table of genetic disorders (cause, pattern, symptoms) plus five solved Hardy-Weinberg problems

Week 6

Describe the structure and function of plant and animal tissues and organs at the level required by the syllabus
Explain the processes of photosynthesis and respiration, including the sites, inputs, and outputs of each stage
Outline transport in plants (water, minerals, translocation) and the factors affecting transpiration
Interpret experimental data and graphs on enzyme activity, photosynthesis rate, and transpiration

A two-page summary of plant and animal physiology with diagrams and a set of 10 data-interpretation questions answered

Week 7

Describe the principles of ecology, ecosystem components, and energy flow with correct terminology
Explain nutrient cycling, population dynamics, and biodiversity with named examples from your region
Outline environmental issues (pollution, climate change, conservation) and their biological consequences
Answer long-answer questions on ecology using structured point form

A structured long-answer answer bank of 8 ecology questions, each written in point form within time limits

Week 8

Complete at least two full-length timed mock papers and mark them against the official marking scheme
Categorise every error from the mocks into knowledge gaps, terminology errors, and presentation errors
Re-drill the weakest three chapters using spaced recall and re-test yourself after 48 hours
Memorise and rehearse the standard diagram set that appears most frequently in the paper

Two completed timed mock papers with an error log and a revised one-page 'final recall sheet' of weak points

Week 2: Score 80% or above on a closed-book genetics problem set of 20 questions

Week 4: Complete a 45-minute timed section covering genetics, molecular biology, and reproduction with at least 70% accuracy

Week 6: Explain photosynthesis and respiration from memory in under five minutes each with no factual errors

Week 8: Achieve at least 75% on a full-length timed mock paper under exam conditions