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SCHEME OF WORK
Biology
Form 2 2025
TERM III
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WK LSN TOPIC SUB-TOPIC OBJECTIVES T/L ACTIVITIES T/L AIDS REFERENCE REMARKS
1

Reporting

2 2
EXCRETION AND HOMEOSTASIS
Introduction- Definition and importance of homeostasis and excretion.
By the end of the lesson, the learner should be able to:


To define homeostasis and excretion.
To explain necessity of excretion in plants and animals.


Q/A: Definitions of digestion, ingestion and egestion, secretion and excretion.

Discuss importance of excretion in plants and animals.
text book
K.L.B. BK 2
PP. 83-84
3 1-2
EXCRETION AND HOMEOSTASIS
Excretion in plants.
Excretion and homeostasis in unicellular organisms.
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.

Describe excretion and homeostasis in an amoeba and a paramecium.
Probing questions.
Exposition of new terms.
Discuss uses and abuses of plant excretory products.
Q/A: Review diffusion, structure of an amoeba.
Discuss excretion and homeostasis in an amoeba and a paramecium.
Some plants excretory products.
text book
K.L.B. BK 2
PP. 83-84
K.L.B. BK 2
PP. 84-85
4 1-2
EXCRETION AND HOMEOSTASIS
Excretion and homeostasis in animals.
By the end of the lesson, the learner should be able to:
To identify excretory organs in various animals.
Exposition and discussion.
Observe drawings of various animals showing excretory organs.
Specimens of platyhelmin-thes, annelida, insects.
K.L.B. BK 2
P. 85
5 1-2
EXCRETION AND HOMEOSTASIS
The mammalian skin.
The lungs.
By the end of the lesson, the learner should be able to:
Draw and label the structure of the mammalian skin.
To describe functions of parts of the mammalian skin.

To explain the role of lungs as excretory organs.

Exposition and discussion.
Permanent slides of mammalian skin.


Chart/ model- Mammalian lungs.
K.L.B. BK 2
PP. 86-87
K.L.B. BK 2
P. 87
6 1-2
EXCRETION AND HOMEOSTASIS
The kidneys structure.
By the end of the lesson, the learner should be able to:
To describe the external structure of kidney.
To describe the internal structure of the kidney.
Observe external features of a kidney.
Observe internal drawing and labeling of the kidney.
Wall-Charts?internal organs of a kidney.
K.L.B. BK 2
PP. 89-90
7 1-2
EXCRETION AND HOMEOSTASIS
The nephron.
Urine formation.
By the end of the lesson, the learner should be able to:
Describe features of the nephron.
To explain formation of urine.
Discuss features of the nephron.
Draw structure of the nephron.
Label the diagram.
Detailed discussion.
Chart?Kidney nephron.

K.L.B. BK 2 PP 90
8 1-2
EXCRETION AND HOMEOSTASIS
The loop of Henle.
Kidney diseases and disorders.
The Liver.
By the end of the lesson, the learner should be able to:
To explain the function of the loop of Henle; and how it?s adapted to its function.
To discuss the role of ADH in determination of concentration of urine.
To draw and label a diagram of the liver.
Discussion and explanations.

Probing questions.
Drawing and labeling diagram of the liver.
Chart-
The nephron.
text book
Chart-Structure of the liver
K.L.B. BK 2 PP 91-92
K.L.B. BK 2 PP 93-94
9 1-2
EXCRETION AND HOMEOSTASIS
Deamination.
Other functions of the liver.
Liver disorders.
By the end of the lesson, the learner should be able to:
To explain the function of the liver in deamination.
To name and discuss kidney disorders.
To identify methods of preventing and treating these disorders.
Probing questions.

Discussion
Exposition and discussion.
text book
K.L.B. BK 2 PP 95
K.L.B. BK 2 PP 96-97
10 1-2
EXCRETION AND HOMEOSTASIS
Homeostasis.
The feedback mechanism.
The hypothalamus.
By the end of the lesson, the learner should be able to:
To define the concepts of internal environment and homeostasis.
To explain the role of hypothalamus in thermoregulation.
Exposition and discussion.
Exposition and detailed discussion.
text book
Chart-
Schematic diagram of feedback mechanism
K.L.B. BK 2 PP 97-98
K.L.B. BK 2 PP 98
11 1-2
EXCRETION AND HOMEOSTASIS
The skin and thermoregulation.
Blood vessels and their functions in thermo-regulation.
Homeostatic behavioral activities.
By the end of the lesson, the learner should be able to:
To explain the function of the skin in thermoregulation.
To explain the adaptation of blood vessels and their function in thermo-regulation.
Exposition and discussion.
Exposition and discussion.
Drawing schematic diagrams.
text book
text book
text book,video
K.L.B. BK 2 PP 98
K.L.B. BK 2 PP 98-99
12 1-2
EXCRETION AND HOMEOSTASIS
Osmoregulation.
Blood sugar.
Diabetes.
By the end of the lesson, the learner should be able to:
To describe water and salts balance in the body.
To distinguish diabetes mellitus from diabetes inspidus.
To identify simple symptoms of diabetes mellitus and diabetes inspidus.
Detailed discussion.
Detailed discussion.

Probing questions.

Topic review.
text book
K.L.B. BK 2 PP 100-101
K.L.B. BK 2 PP  103

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