Mrs Nubi

ADAPTATION

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

ECOLOGICAL MANAGEMENT

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

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

ENVIRONMENTAL POLLUTION

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 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

NUTRIENT CYCLING IN NATURE

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

FOOD PRODUCTION AND STORAGE

Introduction Food production depends on the following Role of government in agricultural production Environmental factors required for food production 3Ways of improving crop production Role of Government in Agricultural… Read More »FOOD PRODUCTION AND STORAGE

TERRESTRIAL HABITATS

TERRESTRIAL HABITATS Organisms of the land are called terrestrial organisms. They include plants and animals that are found living on the ground and under the ground. Basically, terrestrial habitat is… Read More »TERRESTRIAL HABITATS

AQUATIC HABITAT

HABITAT (AQUATIC HABITAT) Habitat is a place where organisms (plants, microorganisms and animals) are naturally found e. g. the habitat of tadpole is the bottom of fresh water ponds or… Read More »AQUATIC HABITAT

DEVELOPMENT OF ZYGOTE IN FLOWERING PLANTS

DEVELOPMENT OF ZYGOTE IN FLOWERING PLANTS, GERMINATION OF SEEDS, ADAPTIVE FEATURES IN A DEVELOPING ANIMAL DEVELOPMENT OF ZYGOTE IN PLANTS Pollination is followed by fertilization and the development of zygote… Read More »DEVELOPMENT OF ZYGOTE IN FLOWERING PLANTS

DEVELOPMENT OF NEW ORGANISMS

COURTSHIP BEHAVIOURS IN ANIMALS Courtship is a reproductive communication between males and females of a species that ends in sexual union. Courtship behaviours in animals include PAIRING: – A form… Read More »DEVELOPMENT OF NEW ORGANISMS

ORGAN OF HEARING, SMELL AND TASTE

THE ORGAN OF HEARING Mammals have two ears on each side of the head. The greater part of it is enclosed in the skull for protection. The ear is for… Read More »ORGAN OF HEARING, SMELL AND TASTE

SENSE ORGANS

SENSORY RECEPTORS All living organisms respond to changes in their environment (stimuli). These changes can be mechanical, electromagnetic, chemical or thermal. Though most cells in the bodies of organisms are… Read More »SENSE ORGANS

REFLEX, VOLUNTARY ACTIONS AND CONDITIONAL REFLEXES

REFLEX AND VOLUNTARY ACTIONS Actions are responses to stimuli. These actions are grouped into two: involuntary (reflex) and voluntary actions. REFLEX ACTIONS Reflex actions are automatic responses to stimuli… Read More »REFLEX, VOLUNTARY ACTIONS AND CONDITIONAL REFLEXES