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4.0:CELL STRUCTURE AND ORGANISATION

2.0: SAFETY IN OUR ENVIRONMENT

1.0: CLASSIFICATION OF LIVING THINGS

Excretion is an essential process in living organisms that involves the removal of metabolic waste products to maintain a stable internal environment. This Form Three Biology PDF note provides clear explanations of excretion, egestion, and secretion, helping students understand their differences and roles in the body. The material covers the importance of excretion, major excretory products such as carbon dioxide, urea, and uric acid, and how they are eliminated in both plants and animals. It also explains nitrogenous wastes, including ammonia, urea, and uric acid, along with their characteristics and examples. In addition, the notes describe human excretory organs such…

5.0: Regulation The Concept of RegulationRegulation is the maintenance of a relatively constant body internal environment.OR is the process of controlling the internal body environment and needs.Cells will only function properly if there is little or no fluctuation in the conditions of their immediate environment.HOMEOSTASISIs the process of maintaining a constant internal environment in living organismsIMPORTANCE OF REGULATIONReasons that show importance of regulation:-1. Ensuring survival of the organisms2. Maintaining favorable condition such as pH and required ionic concentration for the functioning of cells, tissues and organs.3. Enabling organisms to get rid of body wastes and useless materials for example excess water…

Reproduction is a fundamental topic in Form Four Biology that explains how organisms produce new individuals to ensure the survival of a species. This PDF note clearly covers the two main types of reproduction: sexual and asexual reproduction. The material explains key features of asexual reproduction, including its characteristics, advantages, and disadvantages, helping students understand why it is fast but lacks variation. It also includes detailed explanations of common types such as binary fission, multiple fission, budding, fragmentation, and sporulation with relevant examples. In addition, the notes highlight the importance of variation in sexual reproduction and how it contributes to…

3.0: Coordination This is third topic in form three caled cordination it is published by ujuziblog to equip you near to understand biology conceps.

2.0: Movement And Locomotion This is second topic of biology in form three class tat explain about movement and locomation on living things.MOVEMENTMovement is the act of changing positions or postures by the part or the whole of an organism.Movement occurs both in plants and animalsMovement in plants mainly involves growth towards or away from certain environmental factors.LEVELS AT WHICH MOVEMENT OCCURSMovement can occur at various levels, namely:i. Cellular levelii. Organ leveliii. Organism levelI. CELLULAR LEVELAt this level, movement is by cytoplasmic streaming e.g. In amoeba and swimming of male gametes such as sperms.II. ORGAN LEVELIn animal, movement of organs…

1.0: Classification Of Living Things This is first topic of form three class in biology topic. this topi is published by Ujziblog to give you knowlsdge on education matter.Classification of living things means to arrange animals and plants in taxonomic groups based on their observed similarities. Living things are divided into five kingdoms: animal, plant, fungi, protist and MoneraKINGDOM PLANTAEKingdom plantae is a kingdom in which all plants are grouped.Plants: are multi-cellular eukaryotic organisms with ability to manufacture their own food by using energy from the sun through the process of photosynthesis.DIVISION OF KINGDOM PLANTAEKingdom Plantae is made up of the following…

Human Immuno Deficiency (HIV), Acquired Immuno Deficiency Syndrome (AIDS), And Sexual Transmitted Infections (STI’S) Concept of HIVHIV stands for Human Immunodeficiency VirusHuman Immunodeficiency Syndrome (HIV)Is a retrovirus that causes the immune system to lose its efficiency, thus causing AIDS.– HIV infects human cell and use the energy and nutrients of those cell to grow and reproduce.NB: A person who has been infected with HIV is said to be HIV positive– HIV enters the human body and increases chance of getting AIDS. This is because the virus destroys and kills a specific type of white blood cells called T – helper cells.– The…