Properties of light and reflection on plane mirror (O-level)
Lesson 1 LIGHT İs a form of energy that enables us to see. Sources of light Natural sources include sun, star, glowing insects Artificial luminous ... Read More
Ecology lesson 2 of 3
Population, population size, significance of population size, factors to consider when determining population size, methods of determining population size, direct counting method, sampling methods, capture-recapture ... Read More
Transport in flowering plants structured questions
Questions selected skillfully to test and aid understanding, answers are provided Read More
Transport in flowering plants objective questions
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Behaviours structured questions
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Behaviours objective revision questions
Behaviors objective revision questions Read More
Behaviors (A- level)
Definitions, instinctive behavior ( reflex, kinesis, taxis) sign stimulus, Learned behaviors ( habituations, classical conditioning, operant conditioning, insight learning, latent learning, imprinting, displacement activity, courtship ... Read More
Ecology lesson 1 of 3
Definition, Abiotic factors (soil, climate, fire, topography), Biotic factors (parasitism, mutualism, commensalism, predation), food chains, food webs, pyramid of number, pyramid of biomass, pyramid of ... Read More
Transport in flowering plants objective questions
Questions selected to test and facilitate understanding Read More
Gaseous exchange structured revision questions
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Gaseous exchange objective revision questions
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Transpiration and structure of stomata
Definition, function of transpiration, adaptations of xerophytes, mesophytes, and hydrophytes; structure of stomata, mechanisms for stomata opening Read More
Transport in flowering plants
Structure and adaptations of xylem, structure and adaptations of phloem, Path taken by water in roots (the apoplast pathway, the Symplast pathway, the vacuolar pathways ... Read More
Gaseous exchange (A-level)
Need for gaseous exchange surface, adaptations of a gaseous exchange surface, special gaseous surfaces in animals, tracheal system, advantages and disadvantages of tracheal system, gaseous ... Read More
Evolution objective revision questions
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Evolution structured revision questions for A-level studens
questions specially selected to test and facilitate understanding of the subject Read More
Evolution Essay revision questions
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Evolution (A-level biology) lesson 3 of 3
Evidences of evolution, convergent evolution, analogous structures, homologous structure, adaptive radiation, divergent evolution, pentadactyl limb, vestigial structures Read More
Evolution (A-level biology) lesson 2 of 3
Genetic pool, allele frequency, genotype frequency, genetic drift, genetic load, gene flow, Hardy-Weinberg principles and its calculations, speciation and isolation mechanisms, green revolution, artificial selection. Read More
Evolution A-level lesson 1 of 3 (A-level biology)
Definition of evolution, theories for origin of life, Lamarck and Darwin's theories of evolution, natural selection, continuous and discontinuous variations. types of selection i.e. direction, ... Read More