CBSE Class 9 and 10 Biology: revision path with simulations

The biology chapters of CBSE Science (086) for Classes 9 and 10 in syllabus order. Each topic links to simulations that show it working; the practicals from the lab manual are marked, and the Class 10 topics are the ones assessed in the board exam.

35 topics · 45 simulations · 7 practicals

Class 9

Plant and animal cells, prokaryotes and eukaryotes, organelles IX Ch 2 Cell
- Eukaryotic and prokaryotic cell structure
- Plant and animal cell structure under the microscope
Diffusion and osmosis; semi-permeable membrane IX Ch 2 Cell
- Diffusion and Osmosis – Membrane Model and Potato Strip Experiment
- Diffusion across membranes and osmosis in cells
Cell division (mitosis, meiosis) and cancer IX Ch 2 Cell
- Mitosis and Meiosis – Animated Stages of Cell Division
- Cell cycle and mitosis
Stained temporary mounts of onion peel and cheek cells PracticalIX Practical 4
- Plant and animal cell structure under the microscope
- Microscopy lab – slides, calibration, cell size and electron microscopes
Plant tissues: meristematic and permanent (parenchyma, collenchyma, sclerenchyma, xylem, phloem) IX Ch 3 Tissues
- Cell types gallery – specialised cells, unicellular organisms and atypical cells
Animal tissues: epithelial, connective, muscular, nervous IX Ch 3 Tissues
- Cell types gallery – specialised cells, unicellular organisms and atypical cells
- Levels of organization – from cell to organism
Musculoskeletal system, joints and their care IX Ch 3 Tissues
- Skeleton, joints and antagonistic muscles – elbow lever and range of motion
Asexual reproduction: fission, budding, spores, fragmentation, vegetative propagation IX Ch 11 Reproduction
- Asexual and sexual reproduction in organisms
Sexual reproduction in flowering plants: flower, pollination, fertilisation, seed dispersal IX Ch 11 Reproduction
- Flowering plant reproduction lab – dissection, pollination, dispersal and germination
- Pollination and coevolution – flowers and pollinators, courtship and evolutionary arms races
Human reproduction, menstrual cycle and birth control IX Ch 11 Reproduction
- Human ovulation cycle and plant double fertilization
Budding in yeast and Hydra; spore formation in bread mould PracticalIX Practical 6
- Asexual and sexual reproduction in organisms
Parts of a typical bisexual flower PracticalIX Practical 7
- Flowering plant reproduction lab – dissection, pollination, dispersal and germination
Five kingdoms, plant and animal groups, binomial nomenclature IX Ch 12 Diversity
- Dichotomous key – classifying organisms with yes/no questions
Viruses as acellular entities IX Ch 12 Diversity
- Viral replication – lytic and lysogenic cycles

Class 10

Nutrition: photosynthesis and human digestion Exam topicX Ch 5 Life Processes
- Photosynthesis rate – light, CO₂, temperature and the compensation point
- Digestive system journey – enzymes, bile and absorption by villi
Aerobic and anaerobic respiration Exam topicX Ch 5 Life Processes
- Cellular respiration pathway – glycolysis, link reaction, Krebs cycle, electron transport chain and fermentation
- Fermentation – lactic acid and ethanol pathways
Transport: heart, double circulation, blood vessels; xylem and phloem Exam topicX Ch 5 Life Processes
- Single and double circulation
- Cardiac cycle – pressure, heart valves, ECG and control of heart rate
- Transport in plants – root uptake, xylem and phloem
Excretion: nephron and dialysis Exam topicX Ch 5 Life Processes
- Kidney, nephron and ADH – osmoregulation
Temporary mount of a leaf peel to show stomata PracticalExam topicX Practical 6
- Leaf structure and stomatal density – leaf cross-section and a nail-varnish leaf cast
Show that CO₂ is given out during respiration PracticalExam topicX Practical 7
- Respirometer – oxygen uptake of germinating seeds
- Photosynthesis practicals – starch test on leaves and hydrogencarbonate indicator
Nervous system, neurons and reflex arc Exam topicX Ch 6 Control and Coordination
- Neuron – action potential and nerve impulse conduction
- Chemical synapse – transmission, summation and the effects of drugs
- Reaction time – the ruler drop test
Human brain: parts and functions Exam topicX Ch 6 Control and Coordination
- Brain regions, brain mapping and plasticity – cortex, cerebellum, medulla, homunculus and LTP
Plant tropisms and plant hormones Exam topicX Ch 6 Control and Coordination
- Plant tropisms: phototropism, hydrotropism, gravitropism
- Plant growth hormones and insect metamorphosis
Animal hormones and feedback Exam topicX Ch 6 Control and Coordination
- Endocrine system – glands, hormones and feedback loops
Asexual reproduction: fission, fragmentation, regeneration, budding, spores, vegetative propagation Exam topicX Ch 7 How do Organisms Reproduce?
- Asexual and sexual reproduction in organisms
Sexual reproduction in flowering plants Exam topicX Ch 7 How do Organisms Reproduce?
- Flowering plant reproduction lab – dissection, pollination, dispersal and germination
- Human ovulation cycle and plant double fertilization
Human reproduction, reproductive health and contraception Exam topicX Ch 7 How do Organisms Reproduce?
- Human ovulation cycle and plant double fertilization
Binary fission in Amoeba and budding in yeast and Hydra PracticalExam topicX Practical 12
- Asexual and sexual reproduction in organisms
Parts of a dicot seed embryo (pea, gram, kidney bean) PracticalExam topicX Practical 14
- Flowering plant reproduction lab – dissection, pollination, dispersal and germination
Mendel's monohybrid and dihybrid crosses Exam topicX Ch 8 Heredity
- Punnett Square – Mendelian Genetics (One and Two Trait Pairs)
- Dihybrid cross: independent assortment, gene linkage and crossing over
Sex determination in humans Exam topicX Ch 8 Heredity
- Sex determination and X-linked inheritance – Punnett squares and pedigrees
Acquired and inherited traits, speciation, fossils, homologous organs, human evolution X Reading material (formative): Evolution
- Evidence for evolution – anatomy, embryos, fossils and molecules
- Speciation – allopatric and sympatric (polyploidy), reproductive isolation and the species concept
- Fossils and dating – rock-strata dig, index fossils and radiometric dating
- Human evolution – hominin skulls, skeletons, stone tools and out of Africa
Ecosystem, food chains, trophic levels and the 10% law Exam topicX Ch 13 Our Environment
- Food chains, energy pyramids and the carbon cycle
- Food web – removing species, invasive species and the energy pyramid
Biological magnification Exam topicX Ch 13 Our Environment
- Bioaccumulation and biomagnification – DDT, mercury and microplastics in a food chain
Biodegradable and non-biodegradable waste and its management Exam topicX Ch 13 Our Environment
- Materials life cycle and recycling – from resource to product, life cycle assessment and reserves

Topics follow the published curriculum; the mapping to simulations is by Simulic. Simulic is not affiliated with CBSE or NCERT.