TRANSPORT IN PLANTS AND ANIMALS

Immune responses.

By the end of the lesson, the learner should be able to:
To differentiate between natural and acquired immunity.
To explain the role of vaccines in immune responses.

Detailed explanations and open discussion.
To explain the role of vaccination / immunization.
Open discussion on HIV / AIDS.

Chart- Diseases that children are immunized against;
Resource person.

K.L.B. BOOK 2
Pages 40 - 41

TRANSPORT IN PLANTS AND ANIMALS
GASEOUS EXCHANGE

Allergic reactions.
Organ transplant.
Introduction. Gaseous exchange in plants.
Release of CO2 by plants.

By the end of the lesson, the learner should be able to:
To define an allergic reaction.
To identify ways in which allergy presents itself.
To explain cause of allergic reactions.




To explain importance of gaseous exchange.

To describe gaseous exchange in plants.

Q/A: Manifestations of allergy.

Exposition and brief explanations.


Discussion
Explanations

Q/A: Products of respiration.
Detailed discussion.

text book
text book
Bicarbonate indicator, boiling tubes, Aluminum foil.

K.L.B. BOOK 2
Page 43
K.L.B. BOOK 2
P. 48

GASEOUS EXCHANGE

Release of O2 by plants.
Stomata.
Opening & closing of stomata.

By the end of the lesson, the learner should be able to:
To describe an experiment to show release of O2 by plants.

Teacher demonstration: Test for the gas evolved.
Discuss observations.

Gas jar,
Glass funnel,
Water plant,
Beaker.
text book

K.L.B. BOOK 2
P. 49

GASEOUS EXCHANGE

Stomata and habitats of plants.
Lenticels.
Respiratory surfaces in animals.

By the end of the lesson, the learner should be able to:
To relate plant habitats and the no. of stomata.
To explain the variation between number of stomata on the upper and lower face.

Observe number of stomata of prepared slides of hydrophytes and xerophytes.

Discuss the observations.

Prepared slides of hydrophytes and xerophytes.
text book

K.L.B. BOOK 2
P. 51

GASEOUS EXCHANGE

Gaseous exchange in protozoa.
Gaseous exchange in insects.
Breathing in insects.
Number, position and shape of spiracles of insects.
Gaseous exchange in a bony fish.

By the end of the lesson, the learner should be able to:
To describe the mechanism of gaseous exchange in an amoeba.
To describe the breathing mechanism in an insect.

Q/A: Review diffusion, structure of an amoeba.
Discuss briefly gaseous exchange in and out of amoeba.

Observe breathing movements of live specimens of grasshoppers, locusts or cockroaches.

text book
Live specimens of insects,
Hand lenses,
Boiling tubes.
Live specimens of insects.

A gill of a fish.

K.L.B. BOOK 2
P. 53
K.L.B. BOOK 2
P. 56

GASEOUS EXCHANGE

Gaseous exchange in amphibians.
Gaseous exchange in mammals.

By the end of the lesson, the learner should be able to:
To explain the mechanism of gaseous exchange in a frog.

Q/A: Various methods of gaseous exchange in a frog.
Discuss gaseous exchange through the mouth, lungs and skin of a frog.

text book
Wall chart- Respiratory system in man.

K.L.B. BOOK 2
P. 58

GASEOUS EXCHANGE

The structure of the lungs.
Inhalation.
Exhalation.
Thoracic cavity model.

By the end of the lesson, the learner should be able to:
To explain adaptations of the lungs to their functions.

Drawing labeled diagrams coupled with explanations.

Wall charts- Structure of lungs.
Chart / model of a rib cage.
Thoracic cavity model.

K.L.B. BOOK 2
P. 60-1

GASEOUS EXCHANGE

Gaseous exchange in an alveolus.
Rate of breathing in man.
Intercostal muscles.

By the end of the lesson, the learner should be able to:
To describe gaseous exchange in an alveolus.
To explain regulation of breathing in man.


To explain the function of intercostal muscles during the breathing system.

Discussion and explanations.
Detailed discussion.
Counting number of inhalations before and after an exercise blow.

text book

Lime water, rib cage model.

K.L.B. BOOK 2
P. 64
K.L.B. BOOK 2
P. 66

GASEOUS EXCHANGE
RESPIRATION

Inhaled and exhaled air.
Diseases of the respiratory system.
Introduction ? Definition and importance of respiration.

By the end of the lesson, the learner should be able to:
To test for CO2 in the air we inhale/ exhale.

Observe colour changes of lime water, and make deductions.
Brief discussion.

Lime water.
Resource person.
text book

K.L.B. BOOK 2
P. 67

RESPIRATION

Burning food.
The mitochondrion.
Aerobic respiration.

By the end of the lesson, the learner should be able to:
To describe an experiment investigating the gas given off when food is burnt.

Teacher demonstration: Burning a food sample.
Testing for the gas evolved during combustion.

text book
Wall charts- The mitochond-rion

K.L.B. BK 2
PP. 73-74

RESPIRATION
RESPIRATION
EXCRETION AND HOMEOSTASIS

Anaerobic respiration.
Oxygen ?debt?.
Applications of anaerobic respiration.
Respiratory substrates & respiratory quotient.
Rate of respiration.
Introduction- Definition and importance of homeostasis and excretion.

By the end of the lesson, the learner should be able to:
To describe anaerobic respiration.
To identify respiratory substrates in the body.
To define respiratory quotient.
To calculate R.Q.

Observe set up experiments.
Detailed discussion punctuated with probing questions:

Brief discussion/ explanations.

Exposition of definition and its significance.
Problem solving.

Glucose
Yeast
Thermometer
text book

K.L.B. BK 2
P.77
K.L.B. BK 2
P. 79

EXCRETION AND HOMEOSTASIS

Excretion in plants.
Excretion and homeostasis in unicellular organisms.
Excretion and homeostasis in animals.

By the end of the lesson, the learner should be able to:
To name plants excretory products.
To state uses of excretory products of plants.

Probing questions.
Exposition of new terms.
Discuss uses and abuses of plant excretory products.

Some plants excretory products.
text book
Specimens of platyhelmin-thes, annelida, insects.

K.L.B. BK 2
PP. 83-84