Biology Notes Form 4 (4)

For the preparation of national and local exams, get the entire biology Form 4 syllabus for free. These biology form 4 notes are aggregated from the various high school approved text books, including KLB biology form 4, Finder biology form 4, etc. The biology notes cover various topics, as shown below.

The form 4 biological concepts that you can learn using our notes include;

  1. Genetics
  2. Evolution
  3. Reception, Response and Co-ordination in Plants and Animals
  4. Support and Movement in Plants and Animals

You can get the notes for free without having to pay a cent on our Easy Elimu Study App, which you can get from the Google Playstore here.

As a bonus, each topic has summarized notes, so you won’t have to stress over writing that mwakenya, which makes passing that summative biology form 4 term 3 exam easy. Whether it’s term 1, 2 or 3, these free biology form 4 summary notes will give you that grade A.

Chapter 1: Summarized notes on genetics

This topic covers various subtopics including:

  • Introduction
  • Variations within Plant and Animal Species
    • Variation
    • Continous and Discontinous Variation
  • Structure and Properties of Chromosomes
    • Number of Chromosomes
    • Chromosome Structure
    • Properties of Chromosomes
    • Structure of DNA
    • Components of DNA
  • First Law of Heredity
    • Monohybrid Inheritance
    • Mendel's Procedure
    • Terms used in Genetics
    • Use of Symbols
    • Test Cross or Back Cross
    • Complete Dominance
    • Incomplete Dominance
    • Inheritance of ABO blood groups in humans
    • The ABO Blood group System
    • Sex Determination in Humans
    • Linkage
  • Mutations
    • Types of Mutations
    • Mutagens
    • Causes and Consequences of Chromosomal Mutations
    • Gene Mutations
    • Genetically Inherited Disorders in Humans
  • Practical Applications of Genetics
  • Practical Activities
    • To demonstrate Contionous variations - Height of Students
    • Discontinous Variations - Ability to Roll Tongue
    • Demonstration of Mitosis and Meiosis

Chapter 2: Summarized notes on evolution

This topic covers various subtopics including:

  • Meaning of Evolution and Current Concepts
  • The Origin of Life
    • Special Creation
    • Chemical Evolution
    • Evidence of Organic Evolution
  • Mechanism of Evolution
    • Lamark's theory
    • Evolution by Natural Selection
  • Practical Activities
    • Comparison of Vertebrate Limbs
    • Comparison of wings of bird and insect
    • Education Tour to Archeological Site/Local Museum

Chapter 3: Summarized notes on reception, response and co-ordination in plants and animals

This topic covers various subtopics including:

  • Introduction
    • Irritability
    • Stimuli
    • Response
    • Co-ordination
    • Reception
  • Irritability in Plants
    • Tropisms
    • Tactic Movement in Plants and Other Organisms
    • Nastic Movements
    • Production of Auxins and their Effects on Plant Growth
  • Reception, Responses and Coordination in Animals
    • Receptors
    • Effectors
    • The Nervous System
    • Simple And Conditioned Reflex Actions
    • The Role of Endocrine System in Human Beings
    • Comparison between Endocrine and Nervous System
    • Structure and Function of Parts of the Human Eye
    • Structure and Functions of Parts of the Human Ear
  • Practical Activities
    • To Investigate Tactic Responses
    • To Investigate Tropisms in Plants
    • Experiment to Determine Distance of the Blind Spot
    • The Knee Jerk Experiment

Chapter 4: Summarized notes on support and movement in plants and animals

This topic covers various subtopics including:

  • Introduction
  • Necessity for Movement and Support in Plants
  • Tissue Distribution in Monocotyledonous and Dicotyledonous Plant
    • Role of Support Tissues in Young and Old Plant
  • Support and Movement in Animal
    • Necessity for Support and Movement in Animals.
    • Types and Functions of Skeletons
    • Mammalian Skeleton
    • Practical Activities
  • Practical Activities
    • To Observe Prepared Slides of Transverse Section of Stems of Herbaceous and Woody Plants
    • To Observe Wilting in Young Herbaceous Plants.
    • To Examine the Exoskeleton in an Arthropod.
    • To Observe the External Features of a Finned Fish.
    • To Examine Bones of the Axial Skeleton of a Rabbit.
    • To Observe Bones of Appendicular Skeleton.

After you are done reading the summarized notes, you can test yourself with our biology form 4 questions and answers, which you can access here.
Moreover, if you are having a problem with a specific topic or want to practice more, you can practice with our biology Form 4 topical revision questions and answers, which you can access here.

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