ADAPTATION
Post Views: 2 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… Read More »ADAPTATION
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ECOLOGICAL MANAGEMENT
Post Views: 2 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… Read More »ECOLOGICAL MANAGEMENT
CONSERVATION OF NATURAL RESOURCES
Post Views: 2 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… Read More »CONSERVATION OF NATURAL RESOURCES
ENVIRONMENTAL POLLUTION
Post Views: 4 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… Read More »ENVIRONMENTAL POLLUTION
NITROGEN CYCLE
Post Views: 2 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… Read More »NITROGEN CYCLE
NUTRIENT CYCLING IN NATURE
Post Views: 2 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… Read More »NUTRIENT CYCLING IN NATURE
FOOD PRODUCTION AND STORAGE
Post Views: 2 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… Read More »FOOD PRODUCTION AND STORAGE
TERRESTRIAL HABITATS
Post Views: 2 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,… Read More »TERRESTRIAL HABITATS
AQUATIC HABITAT
Post Views: 2 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… Read More »AQUATIC HABITAT
DEVELOPMENT OF ZYGOTE IN FLOWERING PLANTS
Post Views: 0 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… Read More »DEVELOPMENT OF ZYGOTE IN FLOWERING PLANTS
DEVELOPMENT OF NEW ORGANISMS
Post Views: 1 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:… Read More »DEVELOPMENT OF NEW ORGANISMS
ORGAN OF HEARING, SMELL AND TASTE
Post Views: 0 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… Read More »ORGAN OF HEARING, SMELL AND TASTE
SENSE ORGANS
Post Views: 0 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… Read More »SENSE ORGANS
REFLEX, VOLUNTARY ACTIONS AND CONDITIONAL REFLEXES
Post Views: 0 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… Read More »REFLEX, VOLUNTARY ACTIONS AND CONDITIONAL REFLEXES
THE PERIPHERAL NERVOUS SYSTEM
Post Views: 1 THE PERIPHERAL NERVOUS SYSTEM These include the sensory system (receptor and nerves leading from all parts of the body to the CNS) and the motor system (nerves… Read More »THE PERIPHERAL NERVOUS SYSTEM
NERVOUS CO-ORDINATION
Post Views: 0 THE NERVOUS SYSTEM The nervous and hormonal systems co-ordinate various biological activities in the body of multicellular animals, the basic structural unit of nervous system is the… Read More »NERVOUS CO-ORDINATION
HORMONAL CO-ORDINATION
Post Views: 0 HORMONES AND ENDOCRINE GLANDS Hormones are chemical substances produced or secreted by endocrine glands (ductless glands) in response to various stimuli. Hormones are secreted into the bloodstream… Read More »HORMONAL CO-ORDINATION
LIVER AND SKIN: STRUCTURE, FUNCTIONS, DISEASES AND CARE
Post Views: 1 STRUCTURE OF THE LIVER The liver is the largest organ in the body of a mammal with a weight of about 1.25kg. It is reddish brown, soft… Read More »LIVER AND SKIN: STRUCTURE, FUNCTIONS, DISEASES AND CARE
REGULATION OF INTERNAL ENVIRONMENT
Post Views: 0 HOMEOSTASIS Homeostasis is the process by which a fairly constant internal environment is maintained in an organism. The internal environment of an organism is made up of… Read More »REGULATION OF INTERNAL ENVIRONMENT