BSEH SS Biology study guide
BSEH SS Biology · Work through your exam, one topic at a time.
The BSEH Senior Secondary Biology credential is the Class 12 biology qualification awarded by the Board of School Education Haryana. It is taken by students completing senior secondary schooling in Haryana and by private candidates who need a recognised Class 12 biology result for university admission, teacher-training, nursing, pharmacy, or laboratory courses. The BSEH SS Biology study guide has 8 sections and about 2,339 words.
01Reproduction
This domain tests how organisms make gametes and offspring: flowering-plant structures, pollination, double fertilisation, seed formation, plus human gametogenesis, the menstrual cycle, fertilisation, implantation and contraception. Expect diagram-free questions on ploidy, hormone timing and events in sequence.
308 words, about 2 min02Genetics and Evolution
Mendelian ratios, deviations such as incomplete dominance and codominance, linkage and recombination, sex determination, mutation, Hardy–Weinberg equilibrium, and the evidence for evolution including natural selection and speciation. Monohybrid F2 = 3:1 phenotype, 1:2:1 genotype; dihybrid F2 = 9:3:3:1 if genes assort independently.
297 words, about 1 min03Biology and Human Welfare
This domain covers pathogens and disease, immunity and vaccines, cancer, drug and alcohol abuse, and the use of microbes in food processing, industrial products, sewage treatment and biofertilisers. Pathogens: Plasmodium causes malaria, Salmonella typhi causes typhoid, HIV causes AIDS, Wuchereria causes filariasis.
280 words, about 1 min04Biotechnology and Its Applications
The exam tests recombinant DNA tools, cloning vectors, PCR, gene cloning, transgenic organisms, biopharmaceuticals, gene therapy, RNA interference and biosafety. Restriction endonucleases cut at palindromic recognition sites; sticky ends allow complementary base pairing.
277 words, about 1 min05Ecology and Environment
Population interactions, population growth, ecosystem productivity, energy flow, nutrient cycling, succession, biodiversity and conservation are tested. Expect data interpretation and definitions with examples.
283 words, about 1 min06Cell Structure and Function
Cell theory, prokaryotic and eukaryotic organisation, organelles, biomolecules, enzymes, membrane transport and the cell cycle are tested. Questions often ask for structure–function links.
280 words, about 1 min07Plant Physiology
Photosynthesis, respiration, water and mineral transport, plant hormones and photoperiodism are tested, with emphasis on sites, inputs, outputs and limiting factors. Light reactions occur in thylakoid membranes and make ATP and NADPH; the Calvin cycle occurs in the stroma and fixes CO2.
336 words, about 2 min08Human Physiology
Digestion, breathing, circulation, excretion, locomotion, neural control and endocrine regulation are tested. Expect calculations and pathway questions.
278 words, about 1 min