ICSE Class 10 — Complete Syllabus
The full topic list with subject breakdown, weightage, and study resources. Updated April 2026.
Subjects: Biology (16 topics) · Chemistry (58 topics) · Mathematics (22 topics) · Physics (44 topics)
Basic Biology
Cell Cycle and Cell Division
HIGH WEIGHTAGEWeightage: 8.0% · ~2 questionsmedium≈ 4h studyCovers the stages of the cell cycle (Interphase: G1, S, G2) and cell division, including mitosis and a basic understanding of meiosis, homologous chromosomes, crossing over, and the significance and differences between mitotic and meiotic divisions.
cell cyclemitosismeiosiscell divisionStructure of Chromosome
Weightage: 3.0% · ~1 questioneasy≈ 2h studyExplains the basic structure of a chromosome, including chromatin, chromatid, gene structure of DNA, and centromere.
chromosome structurechromatinchromatidgenednaGenetics: Mendel's Laws and Sex-linked Inheritance
HIGH WEIGHTAGEWeightage: 10.0% · ~2 questionsmedium≈ 5h studyCovers Mendel's three laws of inheritance, monohybrid and dihybrid crosses (phenotype only), key genetic terms (gene, allele, heterozygous, homozygous, dominant, recessive, mutation, variation, phenotype, genotype), sex determination in humans, and sex-linked inheritance of diseases like haemophilia and colour blindness.
geneticsmendel's lawsinheritancemonohybrid crossdihybrid cross
Plant Physiology
Absorption by Roots
HIGH WEIGHTAGEWeightage: 7.0% · ~2 questionsmedium≈ 4h studyDetails the processes of absorption by roots, including imbibition, diffusion, osmosis, osmotic pressure, root pressure, turgidity, flaccidity, plasmolysis, deplasmolysis, water and mineral absorption, active and passive transport, and the forces responsible for the ascent of sap.
absorptionrootsimbibitiondiffusionosmosisTranspiration
HIGH WEIGHTAGEWeightage: 6.0% · ~2 questionsmedium≈ 3h studyExplains the process and significance of transpiration, including Ganong's potometer, factors affecting its rate, adaptations to reduce transpiration, and a brief idea of guttation and bleeding.
transpirationsignificancepotometerfactors affecting transpirationguttationPhotosynthesis
HIGH WEIGHTAGEWeightage: 10.0% · ~3 questionshard≈ 5h studyCovers the process and importance of photosynthesis, including chloroplast structure, light and dark reactions (photochemical and biosynthetic phases), stomatal function, carbon cycle, and experiments demonstrating essential factors.
photosynthesischloroplastlight reactiondark reactioncarbon cycleChemical Coordination in Plants
Weightage: 4.0% · ~1 questioneasy≈ 2h studyProvides a general study of plant growth regulators (Auxins, Gibberellins, Cytokinins, Abscisic acid, Ethylene) and tropic movements in plants (Phototropism, Geotropism, Hydrotropism, Thigmotropism, Chemotropism).
plant growth regulatorsauxinsgibberellinscytokininsabscisic acid
Human Anatomy and Physiology
Circulatory System
HIGH WEIGHTAGEWeightage: 10.0% · ~3 questionsmedium≈ 5h studyDetails the circulatory system, including blood composition (RBC, WBC, platelets), lymph, structure and working of the heart, blood vessels, circulation, blood coagulation, ABO blood group system, Rh factor, and the significance of the hepatic portal system.
circulatory systembloodlymphheartblood vesselsExcretory System
HIGH WEIGHTAGEWeightage: 6.0% · ~2 questionsmedium≈ 3h studyCovers the excretory organs, structure and function of kidneys, associated blood vessels, and the structure and function of the nephron, including ultra-filtration, selective reabsorption, and tubular secretion.
excretory systemkidneysnephronultra-filtrationselective reabsorptionNervous System and Sense Organs
HIGH WEIGHTAGEWeightage: 10.0% · ~3 questionshard≈ 6h studyExplains the structure of a neuron, the central, autonomous, and peripheral nervous systems, brain and spinal cord, reflex action, and the structure, functions, defects, and corrective measures for the eye and ear.
nervous systemneuronbrainspinal cordreflex actionEndocrine System
HIGH WEIGHTAGEWeightage: 5.0% · ~1 questionmedium≈ 3h studyProvides a general study of endocrine and exocrine glands, focusing on the location, hormones secreted, and effects of hypo- and hyper-secretion for the Adrenal, Pancreas, Thyroid, and Pituitary glands.
endocrine systemhormonesadrenal glandpancreasthyroid glandReproductive System
HIGH WEIGHTAGEWeightage: 7.0% · ~2 questionsmedium≈ 4h studyCovers the organs and functions of the male and female reproductive systems, fertilization, implantation, placenta function, gestation, parturition, menstrual cycle, role of sex hormones, and identical vs. fraternal twins.
reproductive systemfertilisationplacentamenstrual cyclesex hormones
Population
Population Explosion and Control
HIGH WEIGHTAGEWeightage: 5.0% · ~1 questioneasy≈ 2h studyDiscusses population explosion in India and globally, its reasons, problems, and control measures including surgical methods like tubectomy and vasectomy.
population explosionpopulation controldemographybirth ratedeath rate
Human Evolution
Theories of Evolution and Human Ancestors
HIGH WEIGHTAGEWeightage: 5.0% · ~1 questionmedium≈ 3h studyProvides a basic introduction to human evolution, covering Lamarck's theory of inheritance and Darwin's theory of natural selection, along with a brief idea of human ancestors.
human evolutionlamarckismdarwinismnatural selectionaustralopithecus
Pollution
Types, Sources, and Effects of Pollution
HIGH WEIGHTAGEWeightage: 8.0% · ~2 questionsmedium≈ 4h studyCovers types and sources of pollution (air, water, thermal, soil, biomedical, radiation, noise), biodegradable and non-biodegradable wastes, and their effects on climate, environment, human health, and other organisms.
pollutionair pollutionwater pollutionsoil pollutionnoise pollutionPollution Control Measures
Weightage: 4.0% · ~1 questioneasy≈ 2h studyDiscusses measures to control pollution, including use of unleaded petrol/CNG, social forestry, sewage treatment plants, ban on plastics, organic farming, and a brief mention of Swachh Bharat Abhiyan.
pollution controlcngsocial forestrysewage treatmentorganic farming
Exam Insight
Genetics: Mendel's Laws and Sex-linked Inheritance (10.0%), Photosynthesis (10.0%), Circulatory System (10.0%) together make up 30.0% of the Biology paper. Master these topics for maximum ROI.
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