See our comprehensive SS 3 Biology notes for the 1st, 2nd, and 3rd terms, designed to match the WAEC and NECO syllabus.
These well-organized notes cover all essential topics and provide a solid foundation for exam success. Ideal for students revising key concepts or teachers seeking reference materials. Perfect for self-study and exam preparation.
Access SS 3 Biology notes for 1st, 2nd, and 3rd terms, aligned with WAEC & NECO syllabus. Perfect for revision and exam preparation.
1. Ecology of Population An ecological population refers to a group of individuals of the same species that live in the same area and interact with each other. This concept… Read More »Organism: Meaning, Population, Succession, Competition, Overcrowding
Structure of The Kidney The mammalian kidney is a reddish-brown, bean-shaped organ located at the posterior end of the abdomen. The right kidney is slightly lower than the left. On… Read More »Kidney: Structure, Functions, Diseases, Effects, Remedies & Osmoregulator
The Eyes: Anatomy, Functions, Problems, Solutions, Symptoms or Signs, Care For Eyes The eyes are remarkable sensory organs that provide us with a sense of sight, allowing us to perceive… Read More »The Eyes: Anatomy, Functions, Problems, Solutions
Theories of Evolution Organic Evolution Organic evolution is the sum total of adaptive changes from pre–existing or old forms that has taken place over a long time resulting in diversity… Read More »Evolution: Theories of Evolution, Jean Lamarck’s theories
Variation in Population A population represents a dynamic assembly of organisms belonging to the same species, coexisting within a defined geographical region over a specific duration. This collection of individuals,… Read More »Variation, Competition & Succession of Organisms
Development of Zygotes in Plants In flowering plants, the process of pollination is followed by fertilization, leading to the development of the zygote. This development eventually transforms the flower into… Read More »Seeds: Zygotes, Conditions, Formation & Seeds Germination
STRUCTURE OF A FRUIT A fruit is a matured fertilized ovary of a flower containing one or more seeds. Contrary to this, some plants do not undergo fertilization for the… Read More »Fruits: Types, Structure, Agents, Dispersal of Fruits
Genetic Terminology 10.A Locus denotes the gene’s location on a chromosome. Hereditary Variation and Causes Hereditary variation denotes differences among individuals transmitted from parents to offspring, except in identical twins.… Read More »Genetic: Hereditary, Mendel’s Work, Genotype
The reproductive system in humans is a complex and vital system responsible for the creation of new life. It plays a fundamental role in the perpetuation of the human species… Read More »Reproductive System and Reproduction in Humans
Reproductive Behaviours: Courtship Behaviour, Display of Colours & Seasonal Migration Courtship Behaviour in Animals and Territoriality: Courtship behaviour in animals refers to a set of behaviours and displays that individuals… Read More »Reproductive Behaviours
SENSORY RECEPTORS Living organisms have the ability to respond to changes in their environment, known as stimuli. These stimuli can be of various types, including mechanical, electromagnetic, chemical, or thermal.… Read More »Sense Organs: Skin, Eyes, Ears, Nose & Tongue
NATURAL DYNAMIC BALANCE: In the realm of nature, a state of dynamic equilibrium prevails. When environmental conditions influenced by population dynamics, encompassing both abiotic and biotic elements, are propitious, growth… Read More »Balance in Nature: Biotic Factors, Abiotic Factors, Family Planning & Birth Control
Social animals are those in which individuals of the same species live together cooperatively in organized communities known as societies (colonies). Examples of social animals are: social insects (like termites,… Read More »Social Animals: Characteristics, Examples & Importance
What are Hormones? Animal Hormones There are five groups of animal hormones secreted by different glands. 1. PITUITARY HORMONE The pituitary gland is located below the hypothalamus and consists of… Read More »Hormones: Animal Hormones & Plant Hormones
LOCATION AND STRUCTURE OF CHROMOSOMES Chromatin granules (thread – like structures) found in the nucleus of eucaryotic cells are the precursors or raw materials of chromosomes. Chromosomes occur in… Read More »CHROMOSOME | THE BASIS OF HEREDITARY
Genetics is the scientific study of heredity and variation in all living things. The word genetics was coined by Dilliam Bateson (1906
ORGANIC EVOLUTION Organic evolution is the sum total of adaptive changes from pre–existing or old forms that has taken place over a long time resulting in diversity of forms, structures… Read More »THEORIES OF EVOLUTION
ADAPTIVE COLOURATION This is the possession by an organism of a colour which enables it to catch its prey, avoid its predators or enemies, secure mates and ensure their survival.… Read More »ADAPTIVE COLOURATION AND BEHAVIOURAL ADAPTATION
COMPETITION Competition is the process by which living organisms in the habitat struggle with one another for limited essential needs in the environment. Such scarce resources in plants include; light,… Read More »ADAPTATION FOR SURVIVAL
VARIATION IN POPULATION Population is a group of organisms of the same specie living in a specified area within a given period of time. Variation refers to the differences which… Read More »VARIATION IN POPULATION