Biology Notes Form 2 (4)

For the preparation of national and local exams, get the entire biology Form 2 syllabus for free. These biology form 2 notes are aggregated from the various high school approved text books, including KLB biology form 2, Finder biology form 2, etc. The biology notes cover various topics, as shown below.  

The form 2 biological concepts that you can learn using our notes include; 

  1. Transport in plants and animals.
  2. Respiration.
  3. Gaseous exchange.
  4. Excretion and homeostasis.

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 biology form 2 term 3 exam easy. Whether it’s term 1, 2 or 3, these free biology form 2 summary notes will give you that grade A.

Chapter 1: Summarized notes on transport in plants and animals


This topic covers various subtopics including:

  • Introduction
  • Transport in Plants
    • Internal Structure of Roots and Root Hairs
    • Internal structure of a Root Hair Cell
    • The Stem
    • Absorption of Water and Mineral Salts
  • Transpiration
    • Structure and Function of Xylem
    • Forces Involved in Transportation of Water and Mineral Salts
    • Importance of Transpiration
    • Factors Affecting Transpiration
  • Translocation of Organic Compounds
    • Phloem
  • Transport in Animals
    • The Circulatory System
    • Transport in Insects
  • Mammalian Circulatory System
    • Structure and Function of the Heart
    • Pumping Mechanism of the Heart
    • Structure and Function of Arteries, Capillaries and Veins
    • Diseases and Defects of Circulatory System
  • Structure and Function of Blood
    • Composition of Blood
    • ABO Blood Groups
    • Blood Transfusion
    • Lymphatic System
  • Immune Responses
    • Types of Immunity
    • Importance of Vaccination
    • Allergic Reactions

Chapter 2: Summarized notes on respiration.


This topic covers various subtopics including:

  • Meaning and Significance of Respiration
  • Tissue Respiration
    • Mitochondrion Structure and Function
    • Aerobic Respiration
    • Anaerobic Respiration
    • Practical Activities
    • Comparison Between Aerobic and Anaerobic Respiration
    • Comparison Between Energy Output in Aerobic and Anaerobic Respiration
    • Substrates for Respiration
    • Application of Anaerobic Respiration in Industry and at Home

Chapter 3: Summarized notes on gaseous exchange.


This topic covers various subtopics including:

  • Necessity for Gaseous Exchange in Living Organisms
  • Gaseous Exchange in Plants
    • Structure of Guard Cells
    • Mechanism of Opening and Closing of Stomata
    • Process of Gaseous Exchange in Root, Stem and Leaves of Aquatic and Terrestrial Plants
    • Gaseous Exchange Through Stems
    • Gaseous Exchange in Roots
  • Gaseous Exchange in Animals
    • Types and Characteristics of Respiratory Surfaces
    • Characteristics of Respiratory Surfaces
    • Gaseous Exchange in Amoeba
    • Gaseous Exchange in Insects
    • Gaseous Exchange in Bony Fish (e.g, Tilapia)
    • Gaseous Exchange in Amphibians - Frog
    • Gaseous Exchange in a Mammal -Human
    • Dissection of a Small Mammal (Rabbit) to Show Respiratory Organs
  • Diseases of the Respiratory System
  • Practical Activities

Chapter 4: Summarized notes on excretion and homeostasis.

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This topic covers various subtopics including:

  • Introduction
    • Excretion
    • Egestion
    • Secretion
    • Homeostasis
  • Excretion in Plants
    • Plant Excretory Products their Source and Uses
  • Excretory Products in Animals
  • Excretion and Homeostasis in Unicellular Organisms
  • Excretion in Human Beings
    • Structure and Function of the Human Skin
    • Structure and Functions of the Kidneys
    • Common Kidney Diseases
    • Role of Liver in Excretion
    • Common Liver Diseases
  • Homeostasis
    • Neuro-Endocrine System and Homeostasis
    • The Skin and Temperature Regulation
    • Homeostatic Control of Body Temperature in Humans
    • Behavioural and Physiological Responses to Temperature Changes
    • The Skin and Osmoregulation
    • The Kidney and Osmoregulation
    • The Liver

After you are done reading the summarized notes, you can test yourself with our biology form 2 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 2 topical questions and answers, which you can access here.

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