I am Nubi, a passionate Biology teacher with 19 years of teaching experience. I hold a B.Sc. in Biology and a Postgraduate Diploma in Education.
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
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
Adaptation is the possession of special features which improve the chances of an organism to survive in its environment. All organisms have adaptive structures which could be structural or morphological… Read More »Adaptation: Structural Adaptation. Adaptive Colouration & Behavioural Adaptation
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
GENETIC TERMINOLOGY Genetics, the scientific study of heredity and variation in all living organisms, was termed by Dilliam Bateson in 1906. Heredity/Inheritance pertains to the passage and manifestation of traits… Read More »GENETIC | HEREDITARY, MENDEL’S WORK, GENOTYPE
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
Fruits : Types, Structure, Dispersal of Fruits, Agents of Dispersal of Fruits STRUCTURE OF A FRUIT A fruit is a matured fertilized ovary of a flower containing one or more… Read More »Fruits : Types, Structure, Agents, Dispersal of Fruits
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
Seeds: Zygotes, Conditions for Seed Germination, Formation & Seeds Germination Development of Zygotes in Plants In flowering plants, the process of pollination is followed by fertilization, leading to the development… Read More »Seeds | Zygotes, Conditions, Formation & Seeds Germination
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
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
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
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
What are Hormones? Hormones are chemical substances produced or secreted by endocrine glands, which are ductless glands in the body. They are released into the bloodstream and travel to target… Read More »Hormones | Animal Hormones & Plant Hormones
ADAPTATION Adaptation is defined as the ability of an organism to live successfully in a particular habitat as a result of its structure, appearance and behaviour. It is expected that… Read More »ADAPTATION
Biological Association In a community, there exist different kinds of biological associations between organisms of different species. Some of these biological associations are beneficial, some are neutral while others are… Read More »ECOLOGICAL MANAGEMENT
CONSERVATION OF NATURAL RESOURCES Definition: Conservation is defined as the planned, control exploitation or judicious use of natural resources to ensure their continuous availability and to preserve the quality or… Read More »CONSERVATION OF NATURAL RESOURCES
POLLUTION Definition: Pollution is defined as the release of toxic or harmful substances into the environment by their natural forces or man and other animals to an extent that causes… Read More »ENVIRONMENTAL POLLUTION
Nitrogen Cycle Nitrogen is an abundant element in the atmosphere. It is an essential constituent of proteins, a group of substances found in all living cells. About 78% of air… Read More »NITROGEN CYCLE
Meaning Nutrient cycling refers to the movement of certain nutrients like nitrogen, carbon, water, oxygen and other elements from the environment into various organisms and back into the environment. The… Read More »NUTRIENT CYCLING IN NATURE