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Biology
Form 2 2025
TERM II
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WK LSN TOPIC SUB-TOPIC OBJECTIVES T/L ACTIVITIES T/L AIDS REFERENCE REMARKS
5 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
5 3
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
5 4
EXCRETION AND HOMEOSTASIS
Excretion in plants.
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.
K.L.B. BK 2
PP. 83-84
5 5
EXCRETION AND HOMEOSTASIS
Excretion in plants.
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.
K.L.B. BK 2
PP. 83-84
5 6
EXCRETION AND HOMEOSTASIS
Excretion in plants.
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.
K.L.B. BK 2
PP. 83-84
5 7
EXCRETION AND HOMEOSTASIS
Excretion in plants.
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.
K.L.B. BK 2
PP. 83-84
5 8
EXCRETION AND HOMEOSTASIS
Excretion and homeostasis in unicellular organisms.
By the end of the lesson, the learner should be able to:
Describe excretion and homeostasis in an amoeba and a paramecium.
Q/A: Review diffusion, structure of an amoeba.
Discuss excretion and homeostasis in an amoeba and a paramecium.
text book
K.L.B. BK 2
PP. 84-85
6 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
6 3
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
6 4
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
6 5
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
6 6
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
6 7
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
6 8
EXCRETION AND HOMEOSTASIS
The mammalian skin.
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.
Permanent slides of mammalian skin.
K.L.B. BK 2
PP. 86-87
7 1-2
EXCRETION AND HOMEOSTASIS
The lungs.
By the end of the lesson, the learner should be able to:
To explain the role of lungs as excretory organs.
Exposition and discussion.
Chart/ model- Mammalian lungs.
K.L.B. BK 2
P. 87
7 3
EXCRETION AND HOMEOSTASIS
The lungs.
By the end of the lesson, the learner should be able to:
To explain the role of lungs as excretory organs.
Exposition and discussion.
Chart/ model- Mammalian lungs.
K.L.B. BK 2
P. 87
7 4
EXCRETION AND HOMEOSTASIS
The lungs.
By the end of the lesson, the learner should be able to:
To explain the role of lungs as excretory organs.
Exposition and discussion.
Chart/ model- Mammalian lungs.
K.L.B. BK 2
P. 87
7 5
EXCRETION AND HOMEOSTASIS
The lungs.
By the end of the lesson, the learner should be able to:
To explain the role of lungs as excretory organs.
Exposition and discussion.
Chart/ model- Mammalian lungs.
K.L.B. BK 2
P. 87
7 6
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 7
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 8
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
8 1-2
EXCRETION AND HOMEOSTASIS
The nephron.
By the end of the lesson, the learner should be able to:
Describe features of the nephron.
Discuss features of the nephron.
Draw structure of the nephron.
Label the diagram.
Chart?Kidney nephron.

8 3
EXCRETION AND HOMEOSTASIS
The nephron.
By the end of the lesson, the learner should be able to:
Describe features of the nephron.
Discuss features of the nephron.
Draw structure of the nephron.
Label the diagram.
Chart?Kidney nephron.
8 4
EXCRETION AND HOMEOSTASIS
The nephron.
By the end of the lesson, the learner should be able to:
Describe features of the nephron.
Discuss features of the nephron.
Draw structure of the nephron.
Label the diagram.
Chart?Kidney nephron.
8 5
EXCRETION AND HOMEOSTASIS
Urine formation.
By the end of the lesson, the learner should be able to:
To explain formation of urine.
Detailed discussion.
chart
K.L.B. BK 2 PP 90
8 6
EXCRETION AND HOMEOSTASIS
Urine formation.
By the end of the lesson, the learner should be able to:
To explain formation of urine.
Detailed discussion.
chart
K.L.B. BK 2 PP 90
8 7
EXCRETION AND HOMEOSTASIS
Urine formation.
By the end of the lesson, the learner should be able to:
To explain formation of urine.
Detailed discussion.
chart
K.L.B. BK 2 PP 90
8 8
EXCRETION AND HOMEOSTASIS
The loop of Henle.
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.
Discussion and explanations.

Probing questions.
Chart-
The nephron.
K.L.B. BK 2 PP 91-92
9 1-2
EXCRETION AND HOMEOSTASIS
Kidney diseases and disorders.
By the end of the lesson, the learner should be able to:
To name kidney diseases and disorders and state methods of prevention and / treatment.
Discussion and Explanations.
text book
K.L.B. BK 2 PP 92
9 3
EXCRETION AND HOMEOSTASIS
Kidney diseases and disorders.
By the end of the lesson, the learner should be able to:
To name kidney diseases and disorders and state methods of prevention and / treatment.
Discussion and Explanations.
text book
K.L.B. BK 2 PP 92
9 4
EXCRETION AND HOMEOSTASIS
The Liver.
By the end of the lesson, the learner should be able to:
To draw and label a diagram of the liver.
Drawing and labeling diagram of the liver.
Chart-Structure of the liver
K.L.B. BK 2 PP 93-94
9 5
EXCRETION AND HOMEOSTASIS
Deamination.
By the end of the lesson, the learner should be able to:
To explain the function of the liver in deamination.
Probing questions.

Discussion
text book
K.L.B. BK 2 PP 95
9 6
EXCRETION AND HOMEOSTASIS
Deamination.
By the end of the lesson, the learner should be able to:
To explain the function of the liver in deamination.
Probing questions.

Discussion
text book
K.L.B. BK 2 PP 95
9 7
EXCRETION AND HOMEOSTASIS
Other functions of the liver.
By the end of the lesson, the learner should be able to:
To state and explain other functions of the liver.
Probing questions.
Discussion
text book
K.L.B. BK 2 PP 95-96
9 8
EXCRETION AND HOMEOSTASIS
Other functions of the liver.
By the end of the lesson, the learner should be able to:
To state and explain other functions of the liver.
Probing questions.
Discussion
text book
K.L.B. BK 2 PP 95-96
10 1-2
EXCRETION AND HOMEOSTASIS
Liver disorders.
Homeostasis.
By the end of the lesson, the learner should be able to:
To name and discuss kidney disorders.
To identify methods of preventing and treating these disorders.

To define the concepts of internal environment and homeostasis.
Exposition and discussion.
text book
K.L.B. BK 2 PP 96-97
K.L.B. BK 2 PP 97-98
10 3
EXCRETION AND HOMEOSTASIS
Homeostasis.
By the end of the lesson, the learner should be able to:
To define the concepts of internal environment and homeostasis.
Exposition and discussion.
text book
K.L.B. BK 2 PP 97-98
10 4
EXCRETION AND HOMEOSTASIS
The feedback mechanism.
By the end of the lesson, the learner should be able to:
To differentiate between positive and negative feedback and state their roles in maintaining the desirable point.
Schematic representation of feedbacks.

Exposition and discussion.
Chart-
Schematic diagram of feedback mechanism
K.L.B. BK 2 PP 97-98
10 5
EXCRETION AND HOMEOSTASIS
The feedback mechanism.
By the end of the lesson, the learner should be able to:
To differentiate between positive and negative feedback and state their roles in maintaining the desirable point.
Schematic representation of feedbacks.

Exposition and discussion.
Chart-
Schematic diagram of feedback mechanism
K.L.B. BK 2 PP 97-98
10 6
EXCRETION AND HOMEOSTASIS
The hypothalamus.
By the end of the lesson, the learner should be able to:
To explain the role of hypothalamus in thermoregulation.
Exposition and detailed discussion.
text book
K.L.B. BK 2 PP 98
10 7
EXCRETION AND HOMEOSTASIS
The hypothalamus.
By the end of the lesson, the learner should be able to:
To explain the role of hypothalamus in thermoregulation.
Exposition and detailed discussion.
text book
K.L.B. BK 2 PP 98
10 8
EXCRETION AND HOMEOSTASIS
The skin and thermoregulation.
By the end of the lesson, the learner should be able to:
To explain the function of the skin in thermoregulation.
Exposition and discussion.
text book
K.L.B. BK 2 PP 98
11 1-2
EXCRETION AND HOMEOSTASIS
Blood vessels and their functions in thermo-regulation.
By the end of the lesson, the learner should be able to:
To explain the adaptation of blood vessels and their function in thermo-regulation.
Exposition and discussion.
Drawing schematic diagrams.
text book
K.L.B. BK 2 PP 98-99
11 3
EXCRETION AND HOMEOSTASIS
Blood vessels and their functions in thermo-regulation.
By the end of the lesson, the learner should be able to:
To explain the adaptation of blood vessels and their function in thermo-regulation.
Exposition and discussion.
Drawing schematic diagrams.
text book
K.L.B. BK 2 PP 98-99
11 4
EXCRETION AND HOMEOSTASIS
Homeostatic behavioral activities.
By the end of the lesson, the learner should be able to:
To state and explain various homeostatic behavioral activities.
Discussion on control of body temperature.
Probing questions.
text book,video
K.L.B. BK 2 PP 99
11 5
EXCRETION AND HOMEOSTASIS
Homeostatic behavioral activities.
By the end of the lesson, the learner should be able to:
To state and explain various homeostatic behavioral activities.
Discussion on control of body temperature.
Probing questions.
text book,video
K.L.B. BK 2 PP 99
11 6
EXCRETION AND HOMEOSTASIS
Osmoregulation.
By the end of the lesson, the learner should be able to:
To describe water and salts balance in the body.
Detailed discussion.
text book
K.L.B. BK 2 PP 100-101
11 7
EXCRETION AND HOMEOSTASIS
Osmoregulation.
By the end of the lesson, the learner should be able to:
To describe water and salts balance in the body.
Detailed discussion.
text book
K.L.B. BK 2 PP 100-101
11 8
EXCRETION AND HOMEOSTASIS
Blood sugar.
By the end of the lesson, the learner should be able to:
To discuss effects of insufficient/ excess sugar in the blood.

To explain regulation of blood sugar.
Detailed discussion.



Detailed discussion.
text book
K.L.B. BK 2 PP 101-102
12 1-2
EXCRETION AND HOMEOSTASIS
Diabetes.
By the end of the lesson, the learner should be able to:
To distinguish diabetes mellitus from diabetes inspidus.
To identify simple symptoms of diabetes mellitus and diabetes inspidus.
Detailed discussion.

Probing questions.

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

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