Lesson Notes By Weeks and Term - Senior Secondary 2

Transport system 2

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TERM – 1ST TERM

WEEK THREE

Class: Senior Secondary School 2

Age: 16 years

Duration: 40 minutes of 5 periods each

Date:

Subject: Biology

Topic: TRANSPORT SYSTEM 2

SPECIFIC OBJECTIVES: At the end of the lesson, pupils should be able to

  1. Identify media of transportation
  2. Identify blood components.

INSTRUCTIONAL TECHNIQUES: Identification, explanation, questions and answers, demonstration, videos from source

INSTRUCTIONAL MATERIALS: Videos, loud speaker, textbook, pictures

INSTRUCTIONAL PROCEDURES

PERIOD 1-2

PRESENTATION

TEACHER’S ACTIVITY

STUDENT’S

ACTIVITY

STEP 1

INTRODUCTION

The teacher discusses the medium of transport in plants and animals

Students pay

attention

STEP 2

EXPLANATION

Teacher give and explain the components of blood

Students pay

attention and

participate

STEP 3

DEMONSTRATION

Teacher explain the structure of artery vein using well drawn diagrams

Students pay attention and participate

 

STEP 4

NOTE TAKING

The teacher writes a summarized

note on the board

The students

copy the note in

their books

 

NOTE

TRANSPORT SYSTEM

Media of transportation

Various organisms use different media for transportation of essential substances. For examples:

  1. Blood (Animals): Composed of the plasma (fluid), red and white blood cells, platelets. The blood transports nutrients, gases, hormones, and waste products in the circulatory system.
  2. Latex (Plants): A complex mixture of compounds, including water, sugars, resins, proteins, and secondary metabolites. The latex transport of defensive compounds, nutrients, and water in some plants.
  3. Cells (Intracellular Transport): Composed of the cytoplasm, organelles, vesicles. It aid in intracellular transport of molecules within the cell, facilitated by various cellular structures.
  4. Sap (Plants): Composed of water, nutrients, sugars, hormones. And helps in the transport of nutrients and water in the xylem of plants.
  5. Cytoplasm (Intracellular Transport): The cytoplasm is composed of cytosol, organelles, cytoskeleton Which aid intracellular transport of various substances within the cell.

Blood Components and Structure:

  1. Red Blood Cells (Erythrocytes): The red blood cells contain hemoglobin for oxygen transport; lack a nucleus to maximize space for hemoglobin.

       

  1. White Blood Cells (Leukocytes):

       

   - Types:

     - Neutrophils: Phagocytosis of bacteria.

     - Lymphocytes: Involved in immune responses.

     - Monocytes: Transform into macrophages for phagocytosis.

     - Eosinophils: Defense against parasites and allergic reactions.

     - Basophils: Release histamine in allergic responses.

  1. Platelets (Thrombocytes): The platelets aid in blood clotting by forming a plug at the site of injury.

       

  1. Plasma:

       

     - Proteins: Albumin (maintains osmotic pressure), globulins (immune function), fibrinogen (clotting).

     - Nutrients: Glucose, amino acids, lipids.

     - Hormones: Transported to target organs.

     - Waste Products: Urea, creatinine.

     - Electrolytes: Sodium, potassium, calcium.

EVALUATION: 1. Identify 4 media of transportation

  1. What are the composition of latex
  2. Identify 3 components of the blood.

CLASSWORK: As in evaluation

CONCLUSION: The teacher commends the students positively