Science SSLC (English Medium) Class 5 Tamil Nadu Board of Secondary Education Syllabus 2025-26

• Digestion
• Alimentary Canal 
• Digestive organs

• Respiratory System
• Exchange of Gases in Lungs
• Significance of Respiration

• Blood Circulatory System
• Blood vascular system
• Blood Composition
• Blood Coagulation (Clotting)

• Structure of the Heart
• Layers of the Heart Wall
• Chambers of the Heart
• Valves of the Heart
• Pathway of Blood through the Heart

• Blood Vessels: Structure and Functions
• Capillaries

• Blood Circulation through Heart / Functioning of Heart
• Experiment

• Introduction
• Components of Blood

• Introduction
• Human Excretory System Organs
• Excretion in Humans
• Mechanism of Excretion in Humans
• Dialysis

• Introduction
• Components of Nervous System
• Neuron
• Need of Nervous System

• The major division of The Nervous System

1. Central Nervous System (CNS)
2. Peripheral nervous system (PNS)

• Somatic Nervous System
• Autonomic Nervous System
• Components of the nervous system at a glance

Forebrain: 

1. Olfactory lobes
2. Cerebrum
3. Diencephalon

• Spinal Cord 
• T. S. of spinal cord
• Functions of the spinal cord

• Peripheral Nervous System
• Types of PNS

• Three States of Matter
• Comparison of Solids, Liquids, and Gases

• Introduction
• Experiment 1
• Experiment 2

• Universal Solvent
• Experiment: To show that ordinary tap water contains dissolved solids.
• Importance of dissolved salts in water.
• Air dissolved in water.
• Experiment: To show that tap water contains dissolved gases (air). 
• Importance of air dissolved in water.

• Introduction to Energy
• Commercial Unit of Energy

• Introduction
• Applications of Electrical Energy
• Storage of Electrical Energy

• Introduction
• Energy Transfer in The Water Cycle

• Chemical and Physical Changes
• Experiment

• Waste Water
• Effective Methods to Reduce Pollution

• Causes and Prevention of Food Spoilage
• Effects of Storing Food Improperly

• Methods of Food Preservation
• Methods of Food Protection

• Introduction
• Identification of disease

• Categories of Disease

1. Extent of occurrence
   - Endemic diseases
   - Epidemic diseases
   - Pandemic diseases
   - Sporadic diseases
2. Communicability: Communicable or Infectious diseases & Non- Communicable or Non-Infectious diseases
3. Kinds of pathogens
4. Kinds of transmitting agents
5. Congenital diseases and acquired diseases
6. Other types of diseases
   - Infectious diseases
   - Hereditary diseases
   - Physiological diseases
   - Deficiency diseases

• Introduction
• Importance of Water for Sustaining Life

• Waterborne diseases
• Contamination of Water
• Prevention of Waterborne Diseases

• Waterborne Diseases Caused by Bacteria:

1. Diarrhoea
2. Dysentery (Shigellosis)
3. Typhoid Fever Bacteria (Salmonella)
4. Cholera

• Waterborne Diseases Caused by Virus

1. Hepatitus A
2. Hepatitus E

• Vector
• Vector Borne Diseases: Mosquitoes, Cockroaches and Rats

1. Malaria
2. Elephantiasis (filariasis)
3. Yellow fever
4. Dengue

• Control of mosquitoes:

1. Spraying
2. Elimination of breeding places
3. Spraying on stagnant water
4. Biological control

• Mode of Reproduction in Animal:

1. Asexual reproduction
2. Sexual reproduction

• Atmosphere
• Layers of Atmosphere
• The Role of Atmosphere In Climate Control

• Airborne Diseases Caused by Virus

1. Hepatitus A
2. Hepatitus E